87878072 has 16 divisors (see below), whose sum is σ = 165760560. Its totient is φ = 43675264.

The previous prime is 87878069. The next prime is 87878093. The reversal of 87878072 is 27087878.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31553 + ... + 34224.

It is an arithmetic number, because the mean of its divisors is an integer number (10360035).

Almost surely, 2^87878072 is an apocalyptic number.

It is an amenable number.

87878072 is a deficient number, since it is larger than the sum of its proper divisors (77882488).

87878072 is a wasteful number, since it uses less digits than its factorization.

87878072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65950 (or 65946 counting only the distinct ones).

The product of its (nonzero) digits is 351232, while the sum is 47.

The square root of 87878072 is about 9374.3304827598. The cubic root of 87878072 is about 444.5904947970.

The spelling of 87878072 in words is "eighty-seven million, eight hundred seventy-eight thousand, seventy-two".