7872749140 has 12 divisors (see below), whose sum is σ = 16532773236. Its totient is φ = 3149099648.

The previous prime is 7872749107. The next prime is 7872749141. The reversal of 7872749140 is 419472787.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1304943376 + 6567805764 = 36124^2 + 81042^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7872749141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196818709 + ... + 196818748.

It is an arithmetic number, because the mean of its divisors is an integer number (1377731103).

Almost surely, 2^7872749140 is an apocalyptic number.

It is an amenable number.

7872749140 is an abundant number, since it is smaller than the sum of its proper divisors (8660024096).

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

7872749140 is a wasteful number, since it uses less digits than its factorization.

7872749140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393637466 (or 393637464 counting only the distinct ones).

The product of its (nonzero) digits is 790272, while the sum is 49.

The square root of 7872749140 is about 88728.5136807780. The cubic root of 7872749140 is about 1989.3390345482.

The spelling of 7872749140 in words is "seven billion, eight hundred seventy-two million, seven hundred forty-nine thousand, one hundred forty".