87742712 has 24 divisors (see below), whose sum is σ = 174768960. Its totient is φ = 41289600.

The previous prime is 87742691. The next prime is 87742751. The reversal of 87742712 is 21724778.

It is a happy number.

It is a super-2 number, since 2×87742712² = 15397567018229888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16664 + ... + 21287.

It is an arithmetic number, because the mean of its divisors is an integer number (7282040).

Almost surely, 2^87742712 is an apocalyptic number.

It is an amenable number.

87742712 is a deficient number, since it is larger than the sum of its proper divisors (87026248).

87742712 is a wasteful number, since it uses less digits than its factorization.

87742712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37991 (or 37970 counting only the distinct ones).

The product of its digits is 43904, while the sum is 38.

The square root of 87742712 is about 9367.1079848585. The cubic root of 87742712 is about 444.3621075437.

The spelling of 87742712 in words is "eighty-seven million, seven hundred forty-two thousand, seven hundred twelve".