64272312 has 128 divisors (see below), whose sum is σ = 196761600. Its totient is φ = 19315584.

The previous prime is 64272311. The next prime is 64272337. The reversal of 64272312 is 21327246.

64272312 is a `hidden beast` number, since 6 + 427 + 231 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64272311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131733 + ... + 132219.

It is an arithmetic number, because the mean of its divisors is an integer number (1537200).

Almost surely, 2^64272312 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 64272312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98380800).

64272312 is an abundant number, since it is smaller than the sum of its proper divisors (132489288).

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

64272312 is a wasteful number, since it uses less digits than its factorization.

64272312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562 (or 552 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 64272312 is about 8017.0014344517. The cubic root of 64272312 is about 400.5665139428.

Adding to 64272312 its reverse (21327246), we get a palindrome (85599558).

The spelling of 64272312 in words is "sixty-four million, two hundred seventy-two thousand, three hundred twelve".