64024020 has 60 divisors (see below), whose sum is σ = 200850804. Its totient is φ = 17072640.

The previous prime is 64024007. The next prime is 64024031. The reversal of 64024020 is 2042046.

64024020 is a `hidden beast` number, since 640 + 2 + 4 + 0 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7683984 + 56340036 = 2772^2 + 7506^2 .

It is a tau number, because it is divible by the number of its divisors (60).

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

It is a junction number, because it is equal to n+sod(n) for n = 64023984 and 64024002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 18141 + ... + 21380.

Almost surely, 2^64024020 is an apocalyptic number.

64024020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64024020 is an abundant number, since it is smaller than the sum of its proper divisors (136826784).

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

64024020 is a wasteful number, since it uses less digits than its factorization.

64024020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39542 (or 39531 counting only the distinct ones).

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

The square root of 64024020 is about 8001.5011091670. The cubic root of 64024020 is about 400.0500354076.

Adding to 64024020 its reverse (2042046), we get a palindrome (66066066).

The spelling of 64024020 in words is "sixty-four million, twenty-four thousand, twenty".