38487820 has 48 divisors (see below), whose sum is σ = 92731968. Its totient is φ = 13144320.

The previous prime is 38487811. The next prime is 38487871. The reversal of 38487820 is 2878483.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58614 + ... + 59266.

It is an arithmetic number, because the mean of its divisors is an integer number (1931916).

Almost surely, 2^38487820 is an apocalyptic number.

It is an amenable number.

38487820 is an abundant number, since it is smaller than the sum of its proper divisors (54244148).

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

38487820 is a wasteful number, since it uses less digits than its factorization.

38487820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090 (or 1088 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 38487820 is about 6203.8552529858. The cubic root of 38487820 is about 337.6300586991.

The spelling of 38487820 in words is "thirty-eight million, four hundred eighty-seven thousand, eight hundred twenty".