38667820 has 24 divisors (see below), whose sum is σ = 81345600. Its totient is φ = 15439872.

The previous prime is 38667803. The next prime is 38667821. The reversal of 38667820 is 2876683.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (38667821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13036 + ... + 15724.

It is an arithmetic number, because the mean of its divisors is an integer number (3389400).

Almost surely, 2^38667820 is an apocalyptic number.

It is an amenable number.

38667820 is an abundant number, since it is smaller than the sum of its proper divisors (42677780).

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

38667820 is a wasteful number, since it uses less digits than its factorization.

38667820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3417 (or 3415 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 38667820 is about 6218.3454391019. The cubic root of 38667820 is about 338.1555835204.

The spelling of 38667820 in words is "thirty-eight million, six hundred sixty-seven thousand, eight hundred twenty".