64020252 has 12 divisors (see below), whose sum is σ = 149380616. Its totient is φ = 21340080.

The previous prime is 64020241. The next prime is 64020259. The reversal of 64020252 is 25202046.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×64020252² = 8197185332287008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64020259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2667499 + ... + 2667522.

Almost surely, 2^64020252 is an apocalyptic number.

It is an amenable number.

64020252 is an abundant number, since it is smaller than the sum of its proper divisors (85360364).

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

64020252 is a wasteful number, since it uses less digits than its factorization.

64020252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5335028 (or 5335026 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 64020252 is about 8001.2656498831. The cubic root of 64020252 is about 400.0421872171.

Adding to 64020252 its reverse (25202046), we get a palindrome (89222298).

The spelling of 64020252 in words is "sixty-four million, twenty thousand, two hundred fifty-two".