64022400 has 480 divisors, whose sum is σ = 267821400. Its totient is φ = 14929920.

The previous prime is 64022377. The next prime is 64022407. The reversal of 64022400 is 422046.

64022400 is a `hidden beast` number, since 640 + 2 + 24 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64022407) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 3369591 + ... + 3369609.

Almost surely, 2^64022400 is an apocalyptic number.

64022400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64022400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133910700).

64022400 is an abundant number, since it is smaller than the sum of its proper divisors (203799000).

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

64022400 is a wasteful number, since it uses less digits than its factorization.

64022400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68 (or 42 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 64022400 is about 8001.3998775214. The cubic root of 64022400 is about 400.0466612233.

Adding to 64022400 its reverse (422046), we get a palindrome (64444446).

The spelling of 64022400 in words is "sixty-four million, twenty-two thousand, four hundred".