64297152 has 140 divisors (see below), whose sum is σ = 194238880. Its totient is φ = 21026304.

The previous prime is 64297141. The next prime is 64297199. The reversal of 64297152 is 25179246.

64297152 is a `hidden beast` number, since 642 + 9 + 7 + 1 + 5 + 2 = 666.

It is a super-2 number, since 2×64297152² = 8268247510622208, which contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 409458 + ... + 409614.

Almost surely, 2^64297152 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 64297152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97119440).

64297152 is an abundant number, since it is smaller than the sum of its proper divisors (129941728).

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

64297152 is a wasteful number, since it uses less digits than its factorization.

64297152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260 (or 241 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 64297152 is about 8018.5504924519. The cubic root of 64297152 is about 400.6181110216.

The spelling of 64297152 in words is "sixty-four million, two hundred ninety-seven thousand, one hundred fifty-two".