2155620624 has 40 divisors (see below), whose sum is σ = 5619789120. Its totient is φ = 711946368.

The previous prime is 2155620617. The next prime is 2155620641. The reversal of 2155620624 is 4260265512.

It is a super-2 number, since 2×2155620624² = 9293400549228298752, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200772 + ... + 211235.

It is an arithmetic number, because the mean of its divisors is an integer number (140494728).

Almost surely, 2^2155620624 is an apocalyptic number.

2155620624 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2155620624 is an abundant number, since it is smaller than the sum of its proper divisors (3464168496).

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

2155620624 is a wasteful number, since it uses less digits than its factorization.

2155620624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412127 (or 412121 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 2155620624 is about 46428.6616649673. The cubic root of 2155620624 is about 1291.7866044568.

The spelling of 2155620624 in words is "two billion, one hundred fifty-five million, six hundred twenty thousand, six hundred twenty-four".