4572421520 has 80 divisors (see below), whose sum is σ = 10955513088. Its totient is φ = 1773457920.

The previous prime is 4572421501. The next prime is 4572421523. The reversal of 4572421520 is 251242754.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×4572421520² = 41814077113118220800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4572421523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 918077 + ... + 923043.

Almost surely, 2^4572421520 is an apocalyptic number.

4572421520 is a gapful number since it is divisible by the number (40) 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 4572421520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5477756544).

4572421520 is an abundant number, since it is smaller than the sum of its proper divisors (6383091568).

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

4572421520 is a wasteful number, since it uses less digits than its factorization.

4572421520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5328 (or 5322 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 32.

The square root of 4572421520 is about 67619.6829332998. The cubic root of 4572421520 is about 1659.7732210646.

The spelling of 4572421520 in words is "four billion, five hundred seventy-two million, four hundred twenty-one thousand, five hundred twenty".