87921250 has 40 divisors (see below), whose sum is σ = 169342668. Its totient is φ = 34200000.

The previous prime is 87921241. The next prime is 87921271. The reversal of 87921250 is 5212978.

It can be written as a sum of positive squares in 10 ways, for example, as 7800849 + 80120401 = 2793^2 + 8951^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 45300 + ... + 47200.

Almost surely, 2^87921250 is an apocalyptic number.

87921250 is a deficient number, since it is larger than the sum of its proper divisors (81421418).

87921250 is a wasteful number, since it uses less digits than its factorization.

87921250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1960 (or 1945 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 87921250 is about 9376.6331910766. The cubic root of 87921250 is about 444.6632978857.

The spelling of 87921250 in words is "eighty-seven million, nine hundred twenty-one thousand, two hundred fifty".