64440152 has 16 divisors (see below), whose sum is σ = 138086160. Its totient is φ = 27617184.

The previous prime is 64440143. The next prime is 64440169. The reversal of 64440152 is 25104446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 575303 + ... + 575414.

It is an arithmetic number, because the mean of its divisors is an integer number (8630385).

Almost surely, 2^64440152 is an apocalyptic number.

It is an amenable number.

64440152 is an abundant number, since it is smaller than the sum of its proper divisors (73646008).

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

64440152 is a wasteful number, since it uses less digits than its factorization.

64440152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150730 (or 1150726 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 64440152 is about 8027.4623636614. The cubic root of 64440152 is about 400.9148891824.

Adding to 64440152 its reverse (25104446), we get a palindrome (89544598).

The spelling of 64440152 in words is "sixty-four million, four hundred forty thousand, one hundred fifty-two".