40494428 has 36 divisors (see below), whose sum is σ = 78858360. Its totient is φ = 18173376.

The previous prime is 40494409. The next prime is 40494431. The reversal of 40494428 is 82449404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24203 + ... + 25821.

It is an arithmetic number, because the mean of its divisors is an integer number (2190510).

Almost surely, 2^40494428 is an apocalyptic number.

It is an amenable number.

40494428 is a deficient number, since it is larger than the sum of its proper divisors (38363932).

40494428 is a wasteful number, since it uses less digits than its factorization.

40494428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686 (or 1671 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 40494428 is about 6363.5232379555. The cubic root of 40494428 is about 343.3985230369.

The spelling of 40494428 in words is "forty million, four hundred ninety-four thousand, four hundred twenty-eight".