168531264 has 168 divisors, whose sum is σ = 536191968. Its totient is φ = 50181120.

The previous prime is 168531257. The next prime is 168531271. The reversal of 168531264 is 462135861.

It is a happy number.

168531264 is a `hidden beast` number, since 1 + 68 + 531 + 2 + 64 = 666.

It is an interprime number because it is at equal distance from previous prime (168531257) and next prime (168531271).

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (34560) is a multiple of the sum of its prime divisors (480).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 424314 + ... + 424710.

Almost surely, 2^168531264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168531264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268095984).

168531264 is an abundant number, since it is smaller than the sum of its proper divisors (367660704).

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

168531264 is a wasteful number, since it uses less digits than its factorization.

168531264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493 (or 480 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 168531264 is about 12981.9591741771. The cubic root of 168531264 is about 552.3658570210.

The spelling of 168531264 in words is "one hundred sixty-eight million, five hundred thirty-one thousand, two hundred sixty-four".