207512140 has 48 divisors (see below), whose sum is σ = 490742784. Its totient is φ = 73022400.

The previous prime is 207512113. The next prime is 207512153. The reversal of 207512140 is 41215702.

It is a happy number.

It is a super-2 number, since 2×207512140² = 86122576494759200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8394 + ... + 22033.

It is an arithmetic number, because the mean of its divisors is an integer number (10223808).

Almost surely, 2^207512140 is an apocalyptic number.

207512140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

207512140 is an abundant number, since it is smaller than the sum of its proper divisors (283230644).

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

207512140 is a wasteful number, since it uses less digits than its factorization.

207512140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30478 (or 30476 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 207512140 is about 14405.2816702764. The cubic root of 207512140 is about 592.0356192045.

Adding to 207512140 its reverse (41215702), we get a palindrome (248727842).

The spelling of 207512140 in words is "two hundred seven million, five hundred twelve thousand, one hundred forty".