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11990370 = 235757097
BaseRepresentation
bin101101101111…
…010101100010
3211120011200210
4231233111202
511032142440
61104554550
7203626230
oct55572542
924504623
1011990370
11684a5a7
124022a56
13263a7c2
141841950
1510bca80
hexb6f562

11990370 has 32 divisors (see below), whose sum is σ = 32888448. Its totient is φ = 2740608.

The previous prime is 11990359. The next prime is 11990371. The reversal of 11990370 is 7309911.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (11990371) 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, 28339 + ... + 28758.

It is an arithmetic number, because the mean of its divisors is an integer number (1027764).

Almost surely, 211990370 is an apocalyptic number.

11990370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11990370 is an abundant number, since it is smaller than the sum of its proper divisors (20898078).

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

11990370 is a wasteful number, since it uses less digits than its factorization.

11990370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57114.

The product of its (nonzero) digits is 1701, while the sum is 30.

The square root of 11990370 is about 3462.7113653898. The cubic root of 11990370 is about 228.8815899091.

The spelling of 11990370 in words is "eleven million, nine hundred ninety thousand, three hundred seventy".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 70 105 210 57097 114194 171291 285485 342582 399679 570970 799358 856455 1199037 1712910 1998395 2398074 3996790 5995185 11990370