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5215129885 = 57298957731
BaseRepresentation
bin1001101101101100…
…01001000100011101
3111110110012001021201
410312312021010131
541140033124020
62221254155501
7243143605210
oct46666110435
914413161251
105215129885
1122368942a9
121016652b91
136515b2694
143768a1777
15207c9da0a
hex136d8911d

5215129885 has 32 divisors (see below), whose sum is σ = 7482067200. Its totient is φ = 3413921280.

The previous prime is 5215129847. The next prime is 5215129903. The reversal of 5215129885 is 5889215125.

It is not a de Polignac number, because 5215129885 - 27 = 5215129757 is a prime.

It is a super-2 number, since 2×52151298852 = 54395159434840226450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61470 + ... + 119200.

It is an arithmetic number, because the mean of its divisors is an integer number (233814600).

Almost surely, 25215129885 is an apocalyptic number.

It is an amenable number.

5215129885 is a deficient number, since it is larger than the sum of its proper divisors (2266937315).

5215129885 is a wasteful number, since it uses less digits than its factorization.

5215129885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57861.

The product of its digits is 288000, while the sum is 46.

The square root of 5215129885 is about 72215.8561882361. The cubic root of 5215129885 is about 1734.1568526581.

The spelling of 5215129885 in words is "five billion, two hundred fifteen million, one hundred twenty-nine thousand, eight hundred eighty-five".

Divisors: 1 5 7 29 35 89 145 203 445 623 1015 2581 3115 12905 18067 57731 90335 288655 404117 1674199 2020585 5138059 8370995 11719393 25690295 35966413 58596965 149003711 179832065 745018555 1043025977 5215129885