207224540 has 24 divisors (see below), whose sum is σ = 435616272. Its totient is φ = 82805120.

The previous prime is 207224539. The next prime is 207224557. The reversal of 207224540 is 45422702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17072 + ... + 26568.

It is an arithmetic number, because the mean of its divisors is an integer number (18150678).

Almost surely, 2^207224540 is an apocalyptic number.

207224540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

207224540 is an abundant number, since it is smaller than the sum of its proper divisors (228391732).

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

207224540 is a wasteful number, since it uses less digits than its factorization.

207224540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10597 (or 10595 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 207224540 is about 14395.2957593792. The cubic root of 207224540 is about 591.7619835417.

The spelling of 207224540 in words is "two hundred seven million, two hundred twenty-four thousand, five hundred forty".