405655152 has 40 divisors (see below), whose sum is σ = 1197649536. Its totient is φ = 115901376.

The previous prime is 405655121. The next prime is 405655153. The reversal of 405655152 is 251556504.

It is a super-2 number, since 2×405655152² = 329112204688286208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405655153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 603318 + ... + 603989.

Almost surely, 2^405655152 is an apocalyptic number.

405655152 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

405655152 is an abundant number, since it is smaller than the sum of its proper divisors (791994384).

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

405655152 is a wasteful number, since it uses less digits than its factorization.

405655152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207325 (or 1207319 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 33.

The square root of 405655152 is about 20140.8826023092. The cubic root of 405655152 is about 740.2623564508.

The spelling of 405655152 in words is "four hundred five million, six hundred fifty-five thousand, one hundred fifty-two".