40220352 has 42 divisors (see below), whose sum is σ = 115286028. Its totient is φ = 13406592.

The previous prime is 40220329. The next prime is 40220381. The reversal of 40220352 is 25302204.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34338 + ... + 35489.

Almost surely, 2^40220352 is an apocalyptic number.

It is an amenable number.

40220352 is an abundant number, since it is smaller than the sum of its proper divisors (75065676).

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

40220352 is a wasteful number, since it uses less digits than its factorization.

40220352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69845 (or 69832 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 40220352 is about 6341.9517500530. The cubic root of 40220352 is about 342.6220340528.

Adding to 40220352 its reverse (25302204), we get a palindrome (65522556).

The spelling of 40220352 in words is "forty million, two hundred twenty thousand, three hundred fifty-two".