8131628 has 12 divisors (see below), whose sum is σ = 14411040. Its totient is φ = 4014192.

The previous prime is 8131621. The next prime is 8131633. The reversal of 8131628 is 8261318.

It is a super-2 number, since 2×8131628² = 132246747860768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8131628.

It is not an unprimeable number, because it can be changed into a prime (8131621) 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, 12551 + ... + 13182.

It is an arithmetic number, because the mean of its divisors is an integer number (1200920).

Almost surely, 2^8131628 is an apocalyptic number.

It is an amenable number.

8131628 is a deficient number, since it is larger than the sum of its proper divisors (6279412).

8131628 is a wasteful number, since it uses less digits than its factorization.

8131628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25816 (or 25814 counting only the distinct ones).

The product of its digits is 2304, while the sum is 29.

The square root of 8131628 is about 2851.6009538503. The cubic root of 8131628 is about 201.0909384467.

The spelling of 8131628 in words is "eight million, one hundred thirty-one thousand, six hundred twenty-eight".