228720964623420 has 192 divisors, whose sum is σ = 653931665694720. Its totient is φ = 59714792524800.

The previous prime is 228720964623413. The next prime is 228720964623457. The reversal of 228720964623420 is 24326469027822.

228720964623420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2005721805 + ... + 2005835835.

It is an arithmetic number, because the mean of its divisors is an integer number (3405894092160).

Almost surely, 2^{228720964623420} is an apocalyptic number.

228720964623420 is a gapful number since it is divisible by the number (20) 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 228720964623420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (326965832847360).

228720964623420 is an abundant number, since it is smaller than the sum of its proper divisors (425210701071300).

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

228720964623420 is a wasteful number, since it uses less digits than its factorization.

228720964623420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116636 (or 116634 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 57.

The spelling of 228720964623420 in words is "two hundred twenty-eight trillion, seven hundred twenty billion, nine hundred sixty-four million, six hundred twenty-three thousand, four hundred twenty".