7872540 has 48 divisors (see below), whose sum is σ = 23741088. Its totient is φ = 1937664.

The previous prime is 7872521. The next prime is 7872541. The reversal of 7872540 is 452787.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7872541) 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, 4267 + ... + 5826.

It is an arithmetic number, because the mean of its divisors is an integer number (494606).

Almost surely, 2^7872540 is an apocalyptic number.

It is an amenable number.

7872540 is an abundant number, since it is smaller than the sum of its proper divisors (15868548).

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

7872540 is a wasteful number, since it uses less digits than its factorization.

7872540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10118 (or 10116 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 7872540 is about 2805.8046974086. The cubic root of 7872540 is about 198.9321418760.

The spelling of 7872540 in words is "seven million, eight hundred seventy-two thousand, five hundred forty".