207990720 has 448 divisors, whose sum is σ = 887577600. Its totient is φ = 44789760.

The previous prime is 207990707. The next prime is 207990743. The reversal of 207990720 is 27099702.

207990720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (448).

It is a super-2 number, since 2×207990720² = 86520279212236800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1149030 + ... + 1149210.

It is an arithmetic number, because the mean of its divisors is an integer number (1981200).

Almost surely, 2^207990720 is an apocalyptic number.

207990720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 207990720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (443788800).

207990720 is an abundant number, since it is smaller than the sum of its proper divisors (679586880).

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

207990720 is a wasteful number, since it uses less digits than its factorization.

207990720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233 (or 217 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 207990720 is about 14421.8833721536. The cubic root of 207990720 is about 592.4904020237.

The spelling of 207990720 in words is "two hundred seven million, nine hundred ninety thousand, seven hundred twenty".