38732220 has 36 divisors (see below), whose sum is σ = 117488280. Its totient is φ = 10328544.

The previous prime is 38732209. The next prime is 38732257. The reversal of 38732220 is 2223783.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×38732220² = 3000369732256800, which contains 22 as substring.

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, 107410 + ... + 107769.

Almost surely, 2^38732220 is an apocalyptic number.

38732220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38732220 is an abundant number, since it is smaller than the sum of its proper divisors (78756060).

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

38732220 is a wasteful number, since it uses less digits than its factorization.

38732220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215194 (or 215189 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 38732220 is about 6223.5215111703. The cubic root of 38732220 is about 338.3432084499.

The spelling of 38732220 in words is "thirty-eight million, seven hundred thirty-two thousand, two hundred twenty".