87272648 has 8 divisors (see below), whose sum is σ = 163636230. Its totient is φ = 43636320.

The previous prime is 87272617. The next prime is 87272663. The reversal of 87272648 is 84627278.

It can be written as a sum of positive squares in only one way, i.e., 51008164 + 36264484 = 7142^2 + 6022^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 87272599 and 87272608.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5454533 + ... + 5454548.

Almost surely, 2^87272648 is an apocalyptic number.

87272648 is the 4994-th centered heptagonal number.

It is an amenable number.

87272648 is a deficient number, since it is larger than the sum of its proper divisors (76363582).

87272648 is a wasteful number, since it uses less digits than its factorization.

87272648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10909087 (or 10909083 counting only the distinct ones).

The product of its digits is 301056, while the sum is 44.

The square root of 87272648 is about 9341.9830871181. The cubic root of 87272648 is about 443.5671592698.

The spelling of 87272648 in words is "eighty-seven million, two hundred seventy-two thousand, six hundred forty-eight".