72700428570 has 256 divisors, whose sum is σ = 225576161280. Its totient is φ = 14550681600.

The previous prime is 72700428569. The next prime is 72700428589. The reversal of 72700428570 is 7582400727.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 34900749 + ... + 34902831.

It is an arithmetic number, because the mean of its divisors is an integer number (881156880).

Almost surely, 2^72700428570 is an apocalyptic number.

72700428570 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 72700428570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112788080640).

72700428570 is an abundant number, since it is smaller than the sum of its proper divisors (152875732710).

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

72700428570 is a wasteful number, since it uses less digits than its factorization.

72700428570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2661.

The product of its (nonzero) digits is 219520, while the sum is 42.

The spelling of 72700428570 in words is "seventy-two billion, seven hundred million, four hundred twenty-eight thousand, five hundred seventy".