38720980 has 24 divisors (see below), whose sum is σ = 81940320. Its totient is φ = 15369120.

The previous prime is 38720977. The next prime is 38720987. The reversal of 38720980 is 8902783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38720987) 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, 4770 + ... + 10009.

It is an arithmetic number, because the mean of its divisors is an integer number (3414180).

Almost surely, 2^38720980 is an apocalyptic number.

It is an amenable number.

38720980 is an abundant number, since it is smaller than the sum of its proper divisors (43219340).

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

38720980 is a wasteful number, since it uses less digits than its factorization.

38720980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14919 (or 14917 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 38720980 is about 6222.6184199258. The cubic root of 38720980 is about 338.3104764798.

It can be divided in two parts, 38720 and 980, that multiplied together give a square (37945600 = 6160²).

The spelling of 38720980 in words is "thirty-eight million, seven hundred twenty thousand, nine hundred eighty".