87247028 has 12 divisors (see below), whose sum is σ = 166562592. Its totient is φ = 39657720.

The previous prime is 87247003. The next prime is 87247033. The reversal of 87247028 is 82074278.

It is a super-2 number, since 2×87247028² = 15224087789665568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87246982 and 87247000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 991400 + ... + 991487.

It is an arithmetic number, because the mean of its divisors is an integer number (13880216).

Almost surely, 2^87247028 is an apocalyptic number.

It is an amenable number.

87247028 is a deficient number, since it is larger than the sum of its proper divisors (79315564).

87247028 is a wasteful number, since it uses less digits than its factorization.

87247028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1982902 (or 1982900 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 38.

The square root of 87247028 is about 9340.6117572673. The cubic root of 87247028 is about 443.5237500876.

The spelling of 87247028 in words is "eighty-seven million, two hundred forty-seven thousand, twenty-eight".