40520623 has 24 divisors (see below), whose sum is σ = 48698496. Its totient is φ = 33415200.

The previous prime is 40520611. The next prime is 40520633. The reversal of 40520623 is 32602504.

It is a happy number.

It is not a de Polignac number, because 40520623 - 2⁹ = 40520111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40520594 and 40520603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40520603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 131836 + ... + 132142.

It is an arithmetic number, because the mean of its divisors is an integer number (2029104).

Almost surely, 2^40520623 is an apocalyptic number.

40520623 is a deficient number, since it is larger than the sum of its proper divisors (8177873).

40520623 is a wasteful number, since it uses less digits than its factorization.

40520623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415 (or 402 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 40520623 is about 6365.5811203691. The cubic root of 40520623 is about 343.4725528547.

The spelling of 40520623 in words is "forty million, five hundred twenty thousand, six hundred twenty-three".