40523428 has 24 divisors (see below), whose sum is σ = 81436320. Its totient is φ = 17449920.

The previous prime is 40523419. The next prime is 40523449. The reversal of 40523428 is 82432504.

It is a junction number, because it is equal to n+sod(n) for n = 40523396 and 40523405.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23401 + ... + 25072.

It is an arithmetic number, because the mean of its divisors is an integer number (3393180).

Almost surely, 2^40523428 is an apocalyptic number.

It is an amenable number.

40523428 is an abundant number, since it is smaller than the sum of its proper divisors (40912892).

40523428 is a wasteful number, since it uses less digits than its factorization.

40523428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48507 (or 48505 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 40523428 is about 6365.8014420810. The cubic root of 40523428 is about 343.4804781876.

The spelling of 40523428 in words is "forty million, five hundred twenty-three thousand, four hundred twenty-eight".