40556634 has 16 divisors (see below), whose sum is σ = 81535872. Its totient is φ = 13448448.

The previous prime is 40556623. The next prime is 40556647. The reversal of 40556634 is 43665504.

40556634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40556634² = 3289681122819912, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40556595 and 40556604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16354 + ... + 18669.

It is an arithmetic number, because the mean of its divisors is an integer number (5095992).

Almost surely, 2^40556634 is an apocalyptic number.

40556634 is an abundant number, since it is smaller than the sum of its proper divisors (40979238).

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

40556634 is a wasteful number, since it uses less digits than its factorization.

40556634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35221.

The product of its (nonzero) digits is 43200, while the sum is 33.

The square root of 40556634 is about 6368.4090634946. The cubic root of 40556634 is about 343.5742716579.

The spelling of 40556634 in words is "forty million, five hundred fifty-six thousand, six hundred thirty-four".