234621420 has 144 divisors (see below), whose sum is σ = 764969184. Its totient is φ = 53504000.

The previous prime is 234621391. The next prime is 234621463. The reversal of 234621420 is 24126432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 122470 + ... + 124370.

It is an arithmetic number, because the mean of its divisors is an integer number (5312286).

Almost surely, 2^234621420 is an apocalyptic number.

234621420 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 234621420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (382484592).

234621420 is an abundant number, since it is smaller than the sum of its proper divisors (530347764).

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

234621420 is a wasteful number, since it uses less digits than its factorization.

234621420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1952 (or 1939 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 234621420 is about 15317.3568215929. The cubic root of 234621420 is about 616.7690225358.

Adding to 234621420 its reverse (24126432), we get a palindrome (258747852).

The spelling of 234621420 in words is "two hundred thirty-four million, six hundred twenty-one thousand, four hundred twenty".