64147424 has 36 divisors (see below), whose sum is σ = 138823272. Its totient is φ = 29156160.

The previous prime is 64147403. The next prime is 64147427. The reversal of 64147424 is 42474146.

It is a super-2 number, since 2×64147424² = 8229784011671552, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64147427) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4412 + ... + 12155.

It is an arithmetic number, because the mean of its divisors is an integer number (3856202).

Almost surely, 2^64147424 is an apocalyptic number.

It is an amenable number.

64147424 is an abundant number, since it is smaller than the sum of its proper divisors (74675848).

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

64147424 is a wasteful number, since it uses less digits than its factorization.

64147424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16599 (or 16580 counting only the distinct ones).

The product of its digits is 21504, while the sum is 32.

The square root of 64147424 is about 8009.2086999903. The cubic root of 64147424 is about 400.3068978075.

The spelling of 64147424 in words is "sixty-four million, one hundred forty-seven thousand, four hundred twenty-four".