38307780 has 72 divisors (see below), whose sum is σ = 132804672. Its totient is φ = 8755776.

The previous prime is 38307779. The next prime is 38307793. The reversal of 38307780 is 8770383.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 13942 + ... + 16461.

Almost surely, 2^38307780 is an apocalyptic number.

38307780 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38307780 is an abundant number, since it is smaller than the sum of its proper divisors (94496892).

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

38307780 is a wasteful number, since it uses less digits than its factorization.

38307780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30425 (or 30420 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 38307780 is about 6189.3279118172. The cubic root of 38307780 is about 337.1027754637.

The spelling of 38307780 in words is "thirty-eight million, three hundred seven thousand, seven hundred eighty".