87012944 has 10 divisors (see below), whose sum is σ = 168587610. Its totient is φ = 43506464.

The previous prime is 87012941. The next prime is 87012971. The reversal of 87012944 is 44921078.

It can be written as a sum of positive squares in only one way, i.e., 86862400 + 150544 = 9320^2 + 388^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87012941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2719139 + ... + 2719170.

It is an arithmetic number, because the mean of its divisors is an integer number (16858761).

Almost surely, 2^87012944 is an apocalyptic number.

It is an amenable number.

87012944 is a deficient number, since it is larger than the sum of its proper divisors (81574666).

87012944 is a wasteful number, since it uses less digits than its factorization.

87012944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5438317 (or 5438311 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 87012944 is about 9328.0728985145. The cubic root of 87012944 is about 443.1267363595.

The spelling of 87012944 in words is "eighty-seven million, twelve thousand, nine hundred forty-four".