65238720 has 56 divisors (see below), whose sum is σ = 207135984. Its totient is φ = 17396736.

The previous prime is 65238709. The next prime is 65238721. The reversal of 65238720 is 2783256.

It is not an unprimeable number, because it can be changed into a prime (65238721) 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, 33019 + ... + 34938.

Almost surely, 2^65238720 is an apocalyptic number.

65238720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65238720 is an abundant number, since it is smaller than the sum of its proper divisors (141897264).

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

65238720 is a wasteful number, since it uses less digits than its factorization.

65238720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67977 (or 67967 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 65238720 is about 8077.0489660519. The cubic root of 65238720 is about 402.5641938172.

The spelling of 65238720 in words is "sixty-five million, two hundred thirty-eight thousand, seven hundred twenty".