40155456 has 56 divisors (see below), whose sum is σ = 115909344. Its totient is φ = 12167680.

The previous prime is 40155449. The next prime is 40155457. The reversal of 40155456 is 65455104.

It is a super-2 number, since 2×40155456² = 3224921293135872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40155457) 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, 7395 + ... + 11618.

Almost surely, 2^40155456 is an apocalyptic number.

It is an amenable number.

40155456 is an abundant number, since it is smaller than the sum of its proper divisors (75753888).

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

40155456 is a wasteful number, since it uses less digits than its factorization.

40155456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19039 (or 19029 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 40155456 is about 6336.8332785391. The cubic root of 40155456 is about 342.4376599914.

The spelling of 40155456 in words is "forty million, one hundred fifty-five thousand, four hundred fifty-six".