87429724 has 6 divisors (see below), whose sum is σ = 153002024. Its totient is φ = 43714860.

The previous prime is 87429637. The next prime is 87429761. The reversal of 87429724 is 42792478.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10928712 + ... + 10928719.

Almost surely, 2^87429724 is an apocalyptic number.

It is an amenable number.

87429724 is a deficient number, since it is larger than the sum of its proper divisors (65572300).

87429724 is a wasteful number, since it uses less digits than its factorization.

87429724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21857435 (or 21857433 counting only the distinct ones).

The product of its digits is 225792, while the sum is 43.

The square root of 87429724 is about 9350.3863021802. The cubic root of 87429724 is about 443.8331150537.

The spelling of 87429724 in words is "eighty-seven million, four hundred twenty-nine thousand, seven hundred twenty-four".