87989750 has 16 divisors (see below), whose sum is σ = 164717280. Its totient is φ = 35195800.

The previous prime is 87989723. The next prime is 87989809. The reversal of 87989750 is 5798978.

It is a super-2 number, since 2×87989750² = 15484392210125000, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87989692 and 87989701.

It is a congruent number.

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, 175730 + ... + 176229.

It is an arithmetic number, because the mean of its divisors is an integer number (10294830).

Almost surely, 2^87989750 is an apocalyptic number.

87989750 is a deficient number, since it is larger than the sum of its proper divisors (76727530).

87989750 is a wasteful number, since it uses less digits than its factorization.

87989750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351976 (or 351966 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 53.

The square root of 87989750 is about 9380.2851769016. The cubic root of 87989750 is about 444.7787479009.

The spelling of 87989750 in words is "eighty-seven million, nine hundred eighty-nine thousand, seven hundred fifty".