40512428 has 48 divisors (see below), whose sum is σ = 83952288. Its totient is φ = 16896000.

The previous prime is 40512419. The next prime is 40512457. The reversal of 40512428 is 82421504.

It is a happy number.

40512428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 40512397 and 40512406.

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 15 ways as a sum of consecutive naturals, for example, 30008 + ... + 31328.

It is an arithmetic number, because the mean of its divisors is an integer number (1749006).

Almost surely, 2^40512428 is an apocalyptic number.

It is an amenable number.

40512428 is an abundant number, since it is smaller than the sum of its proper divisors (43439860).

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

40512428 is a wasteful number, since it uses less digits than its factorization.

40512428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1394 (or 1392 counting only the distinct ones).

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

The square root of 40512428 is about 6364.9373916795. The cubic root of 40512428 is about 343.4493963553.

The spelling of 40512428 in words is "forty million, five hundred twelve thousand, four hundred twenty-eight".