40155280 has 40 divisors (see below), whose sum is σ = 101850624. Its totient is φ = 14601600.

The previous prime is 40155259. The next prime is 40155289. The reversal of 40155280 is 8255104.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×40155280² = 3224893023756800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40155289) 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, 21936 + ... + 23695.

Almost surely, 2^40155280 is an apocalyptic number.

40155280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40155280 is an abundant number, since it is smaller than the sum of its proper divisors (61695344).

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

40155280 is a wasteful number, since it uses less digits than its factorization.

40155280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45655 (or 45649 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 40155280 is about 6336.8193914613. The cubic root of 40155280 is about 342.4371596931.

The spelling of 40155280 in words is "forty million, one hundred fifty-five thousand, two hundred eighty".