87020004 has 24 divisors (see below), whose sum is σ = 208535488. Its totient is φ = 28222560.

The previous prime is 87019979. The next prime is 87020029. The reversal of 87020004 is 40002078.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (87019979) and next prime (87020029).

It is a super-3 number, since 3×87020004³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97552 + ... + 98439.

Almost surely, 2^87020004 is an apocalyptic number.

It is an amenable number.

87020004 is an abundant number, since it is smaller than the sum of its proper divisors (121515484).

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

87020004 is a wasteful number, since it uses less digits than its factorization.

87020004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196035 (or 196033 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 87020004 is about 9328.4513184129. The cubic root of 87020004 is about 443.1387207456.

The spelling of 87020004 in words is "eighty-seven million, twenty thousand, four".