7871628 has 24 divisors (see below), whose sum is σ = 18627840. Its totient is φ = 2586640.

The previous prime is 7871627. The next prime is 7871651. The reversal of 7871628 is 8261787.

It is not an unprimeable number, because it can be changed into a prime (7871621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3768 + ... + 5471.

It is an arithmetic number, because the mean of its divisors is an integer number (776160).

Almost surely, 2^7871628 is an apocalyptic number.

It is an amenable number.

7871628 is an abundant number, since it is smaller than the sum of its proper divisors (10756212).

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

7871628 is a wasteful number, since it uses less digits than its factorization.

7871628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9317 (or 9315 counting only the distinct ones).

The product of its digits is 37632, while the sum is 39.

The square root of 7871628 is about 2805.6421724803. The cubic root of 7871628 is about 198.9244597675.

It can be divided in two parts, 787 and 1628, that added together give a triangular number (2415 = T₆₉).

The spelling of 7871628 in words is "seven million, eight hundred seventy-one thousand, six hundred twenty-eight".