987406628 has 24 divisors (see below), whose sum is σ = 1863122688. Its totient is φ = 455177376.

The previous prime is 987406627. The next prime is 987406633. The reversal of 987406628 is 826604789.

It is not an unprimeable number, because it can be changed into a prime (987406627) 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, 33875 + ... + 55877.

It is an arithmetic number, because the mean of its divisors is an integer number (77630112).

Almost surely, 2^987406628 is an apocalyptic number.

It is an amenable number.

987406628 is a deficient number, since it is larger than the sum of its proper divisors (875716060).

987406628 is a wasteful number, since it uses less digits than its factorization.

987406628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22883 (or 22881 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 50.

The square root of 987406628 is about 31423.0270343263. The cubic root of 987406628 is about 995.7844635569.

The spelling of 987406628 in words is "nine hundred eighty-seven million, four hundred six thousand, six hundred twenty-eight".