234505724220 has 72 divisors (see below), whose sum is σ = 711395835696. Its totient is φ = 62529426432.

The previous prime is 234505724197. The next prime is 234505724237. The reversal of 234505724220 is 22427505432.

234505724220 is a `hidden beast` number, since 2 + 3 + 45 + 0 + 572 + 42 + 2 + 0 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2290444 + ... + 2390636.

It is an arithmetic number, because the mean of its divisors is an integer number (9880497718).

Almost surely, 2^234505724220 is an apocalyptic number.

234505724220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

234505724220 is an abundant number, since it is smaller than the sum of its proper divisors (476890111476).

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

234505724220 is a wasteful number, since it uses less digits than its factorization.

234505724220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113211 (or 113206 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 36.

The spelling of 234505724220 in words is "two hundred thirty-four billion, five hundred five million, seven hundred twenty-four thousand, two hundred twenty".