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169286052 = 223131497283
BaseRepresentation
bin10100001011100…
…01100110100100
3102210112121210210
422011301212210
5321314123202
624444215420
74123623225
oct1205614644
9383477723
10169286052
1187615131
124883a570
13290c2380
14186a924c
15ecddc6c
hexa1719a4

169286052 has 48 divisors (see below), whose sum is σ = 428299200. Its totient is φ = 51731328.

The previous prime is 169286023. The next prime is 169286059. The reversal of 169286052 is 250682961.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 169286052.

It is not an unprimeable number, because it can be changed into a prime (169286059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19603 + ... + 26885.

It is an arithmetic number, because the mean of its divisors is an integer number (8922900).

Almost surely, 2169286052 is an apocalyptic number.

169286052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 169286052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214149600).

169286052 is an abundant number, since it is smaller than the sum of its proper divisors (259013148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

169286052 is a wasteful number, since it uses less digits than its factorization.

169286052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7452 (or 7450 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 169286052 is about 13010.9973483972. The cubic root of 169286052 is about 553.1892418474.

The spelling of 169286052 in words is "one hundred sixty-nine million, two hundred eighty-six thousand, fifty-two".

Divisors: 1 2 3 4 6 12 13 26 39 52 78 149 156 298 447 596 894 1788 1937 3874 5811 7283 7748 11622 14566 21849 23244 29132 43698 87396 94679 189358 284037 378716 568074 1085167 1136148 2170334 3255501 4340668 6511002 13022004 14107171 28214342 42321513 56428684 84643026 169286052