40128524 has 12 divisors (see below), whose sum is σ = 71114400. Its totient is φ = 19810128.

The previous prime is 40128509. The next prime is 40128541. The reversal of 40128524 is 42582104.

It is a happy number.

It is a super-2 number, since 2×40128524² = 3220596876837152, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40128493 and 40128502.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63179 + ... + 63810.

It is an arithmetic number, because the mean of its divisors is an integer number (5926200).

Almost surely, 2^40128524 is an apocalyptic number.

It is an amenable number.

40128524 is a deficient number, since it is larger than the sum of its proper divisors (30985876).

40128524 is a wasteful number, since it uses less digits than its factorization.

40128524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127072 (or 127070 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 40128524 is about 6334.7078859250. The cubic root of 40128524 is about 342.3610859748.

The spelling of 40128524 in words is "forty million, one hundred twenty-eight thousand, five hundred twenty-four".