38722020 has 24 divisors (see below), whose sum is σ = 108421824. Its totient is φ = 10325856.

The previous prime is 38721983. The next prime is 38722027. The reversal of 38722020 is 2022783.

It is not an unprimeable number, because it can be changed into a prime (38722027) 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, 322624 + ... + 322743.

It is an arithmetic number, because the mean of its divisors is an integer number (4517576).

Almost surely, 2^38722020 is an apocalyptic number.

38722020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38722020 is an abundant number, since it is smaller than the sum of its proper divisors (69699804).

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

38722020 is a wasteful number, since it uses less digits than its factorization.

38722020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645379 (or 645377 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 38722020 is about 6222.7019854722. The cubic root of 38722020 is about 338.3135053266.

The spelling of 38722020 in words is "thirty-eight million, seven hundred twenty-two thousand, twenty".