38747790 has 48 divisors (see below), whose sum is σ = 101189088. Its totient is φ = 10287168.

The previous prime is 38747771. The next prime is 38747833. The reversal of 38747790 is 9774783.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22852 + ... + 24488.

It is an arithmetic number, because the mean of its divisors is an integer number (2108106).

Almost surely, 2^38747790 is an apocalyptic number.

38747790 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38747790 is an abundant number, since it is smaller than the sum of its proper divisors (62441298).

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

38747790 is a wasteful number, since it uses less digits than its factorization.

38747790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1913 (or 1910 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 45.

The square root of 38747790 is about 6224.7722849916. The cubic root of 38747790 is about 338.3885393399.

It can be divided in two parts, 3874 and 7790, that added together give a square (11664 = 108²).

The spelling of 38747790 in words is "thirty-eight million, seven hundred forty-seven thousand, seven hundred ninety".