38671820 has 24 divisors (see below), whose sum is σ = 88594128. Its totient is φ = 14062400.

The previous prime is 38671817. The next prime is 38671847. The reversal of 38671820 is 2817683.

It is a super-2 number, since 2×38671820² = 2991019324224800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87671 + ... + 88110.

It is an arithmetic number, because the mean of its divisors is an integer number (3691422).

Almost surely, 2^38671820 is an apocalyptic number.

It is an amenable number.

38671820 is an abundant number, since it is smaller than the sum of its proper divisors (49922308).

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

38671820 is a wasteful number, since it uses less digits than its factorization.

38671820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175801 (or 175799 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 38671820 is about 6218.6670597484. The cubic root of 38671820 is about 338.1672433079.

The spelling of 38671820 in words is "thirty-eight million, six hundred seventy-one thousand, eight hundred twenty".