40247432 has 16 divisors (see below), whose sum is σ = 79903260. Its totient is φ = 18939904.

The previous prime is 40247429. The next prime is 40247477. The reversal of 40247432 is 23474204.

It can be written as a sum of positive squares in 2 ways, for example, as 29658916 + 10588516 = 5446^2 + 3254^2 .

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, 147833 + ... + 148104.

Almost surely, 2^40247432 is an apocalyptic number.

It is an amenable number.

40247432 is a deficient number, since it is larger than the sum of its proper divisors (39655828).

40247432 is a wasteful number, since it uses less digits than its factorization.

40247432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295960 (or 295956 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 26.

The square root of 40247432 is about 6344.0863802442. The cubic root of 40247432 is about 342.6989115762.

The spelling of 40247432 in words is "forty million, two hundred forty-seven thousand, four hundred thirty-two".