40623534 has 24 divisors (see below), whose sum is σ = 100591920. Its totient is φ = 11606688.

The previous prime is 40623533. The next prime is 40623559. The reversal of 40623534 is 43532604.

40623534 is a `hidden beast` number, since 4 + 0 + 623 + 5 + 34 = 666.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40623498 and 40623507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40623533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 161079 + ... + 161330.

It is an arithmetic number, because the mean of its divisors is an integer number (4191330).

Almost surely, 2^40623534 is an apocalyptic number.

40623534 is an abundant number, since it is smaller than the sum of its proper divisors (59968386).

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

40623534 is a wasteful number, since it uses less digits than its factorization.

40623534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322424 (or 322421 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 40623534 is about 6373.6593884518. The cubic root of 40623534 is about 343.7630816399.

The spelling of 40623534 in words is "forty million, six hundred twenty-three thousand, five hundred thirty-four".