87724036 has 12 divisors (see below), whose sum is σ = 153678028. Its totient is φ = 43816032.

The previous prime is 87724033. The next prime is 87724067. The reversal of 87724036 is 63042778.

It can be written as a sum of positive squares in 2 ways, for example, as 67076100 + 20647936 = 8190^2 + 4544^2 .

It is a junction number, because it is equal to n+sod(n) for n = 87723986 and 87724004.

It is not an unprimeable number, because it can be changed into a prime (87724033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7011 + ... + 14986.

Almost surely, 2^87724036 is an apocalyptic number.

It is an amenable number.

87724036 is a deficient number, since it is larger than the sum of its proper divisors (65953992).

87724036 is a wasteful number, since it uses less digits than its factorization.

87724036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22998 (or 22996 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 87724036 is about 9366.1110392735. Note that the first 3 decimals coincide. The cubic root of 87724036 is about 444.3305778762.

The spelling of 87724036 in words is "eighty-seven million, seven hundred twenty-four thousand, thirty-six".