40890428 has 6 divisors (see below), whose sum is σ = 71558256. Its totient is φ = 20445212.

The previous prime is 40890419. The next prime is 40890431. The reversal of 40890428 is 82409804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5111300 + ... + 5111307.

It is an arithmetic number, because the mean of its divisors is an integer number (11926376).

Almost surely, 2^40890428 is an apocalyptic number.

It is an amenable number.

40890428 is a deficient number, since it is larger than the sum of its proper divisors (30667828).

40890428 is a wasteful number, since it uses less digits than its factorization.

40890428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10222611 (or 10222609 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 40890428 is about 6394.5623775205. The cubic root of 40890428 is about 344.5142727046.

The spelling of 40890428 in words is "forty million, eight hundred ninety thousand, four hundred twenty-eight".