87249974 has 16 divisors (see below), whose sum is σ = 150023328. Its totient is φ = 37279872.

The previous prime is 87249949. The next prime is 87249979. The reversal of 87249974 is 47994278.

It is a super-2 number, since 2×87249974² = 15225115926001352, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87249979) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4529 + ... + 13964.

It is an arithmetic number, because the mean of its divisors is an integer number (9376458).

Almost surely, 2^87249974 is an apocalyptic number.

87249974 is a deficient number, since it is larger than the sum of its proper divisors (62773354).

87249974 is a wasteful number, since it uses less digits than its factorization.

87249974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18839.

The product of its digits is 1016064, while the sum is 50.

The square root of 87249974 is about 9340.7694543865. The cubic root of 87249974 is about 443.5287420676.

The spelling of 87249974 in words is "eighty-seven million, two hundred forty-nine thousand, nine hundred seventy-four".