87144464 has 20 divisors (see below), whose sum is σ = 184192080. Its totient is φ = 39611040.

The previous prime is 87144461. The next prime is 87144481. The reversal of 87144464 is 46444178.

It is not an unprimeable number, because it can be changed into a prime (87144461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247394 + ... + 247745.

It is an arithmetic number, because the mean of its divisors is an integer number (9209604).

Almost surely, 2^87144464 is an apocalyptic number.

It is an amenable number.

87144464 is an abundant number, since it is smaller than the sum of its proper divisors (97047616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87144464 is a wasteful number, since it uses less digits than its factorization.

87144464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495158 (or 495152 counting only the distinct ones).

The product of its digits is 86016, while the sum is 38.

The square root of 87144464 is about 9335.1199242431. The cubic root of 87144464 is about 443.3498858777.

The spelling of 87144464 in words is "eighty-seven million, one hundred forty-four thousand, four hundred sixty-four".