207457140 has 48 divisors (see below), whose sum is σ = 633689280. Its totient is φ = 50292480.

The previous prime is 207457139. The next prime is 207457147. The reversal of 207457140 is 41754702.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 207457098 and 207457107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207457147) 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, 156505 + ... + 157824.

It is an arithmetic number, because the mean of its divisors is an integer number (13201860).

Almost surely, 2^207457140 is an apocalyptic number.

207457140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

207457140 is an abundant number, since it is smaller than the sum of its proper divisors (426232140).

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

207457140 is a wasteful number, since it uses less digits than its factorization.

207457140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314352 (or 314350 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 207457140 is about 14403.3725217395. The cubic root of 207457140 is about 591.9833092750.

The spelling of 207457140 in words is "two hundred seven million, four hundred fifty-seven thousand, one hundred forty".