38723837220 has 72 divisors (see below), whose sum is σ = 117569402496. Its totient is φ = 10316941632.

The previous prime is 38723837189. The next prime is 38723837279. The reversal of 38723837220 is 2273832783.

38723837220 is a `hidden beast` number, since 387 + 238 + 37 + 2 + 2 + 0 = 666.

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

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, 101019 + ... + 296061.

It is an arithmetic number, because the mean of its divisors is an integer number (1632908368).

Almost surely, 2^38723837220 is an apocalyptic number.

38723837220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38723837220 is an abundant number, since it is smaller than the sum of its proper divisors (78845565276).

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

38723837220 is a wasteful number, since it uses less digits than its factorization.

38723837220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196161 (or 196156 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 45.

The spelling of 38723837220 in words is "thirty-eight billion, seven hundred twenty-three million, eight hundred thirty-seven thousand, two hundred twenty".