38720670 has 32 divisors (see below), whose sum is σ = 97822080. Its totient is φ = 9781920.

The previous prime is 38720657. The next prime is 38720677. The reversal of 38720670 is 7602783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38720677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33396 + ... + 34535.

It is an arithmetic number, because the mean of its divisors is an integer number (3056940).

Almost surely, 2^38720670 is an apocalyptic number.

38720670 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38720670 is an abundant number, since it is smaller than the sum of its proper divisors (59101410).

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

38720670 is a wasteful number, since it uses less digits than its factorization.

38720670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67960.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 38720670 is about 6222.5935107477. The cubic root of 38720670 is about 338.3095736400.

The spelling of 38720670 in words is "thirty-eight million, seven hundred twenty thousand, six hundred seventy".