234386628 has 72 divisors (see below), whose sum is σ = 633632832. Its totient is φ = 66056256.

The previous prime is 234386611. The next prime is 234386651. The reversal of 234386628 is 826683432.

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

It is a self number, because there is not a number n which added to its sum of digits gives 234386628.

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, 1354750 + ... + 1354922.

It is an arithmetic number, because the mean of its divisors is an integer number (8800456).

Almost surely, 2^234386628 is an apocalyptic number.

234386628 is a gapful number since it is divisible by the number (28) 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 234386628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316816416).

234386628 is an abundant number, since it is smaller than the sum of its proper divisors (399246204).

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

234386628 is a wasteful number, since it uses less digits than its factorization.

234386628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 312 counting only the distinct ones).

The product of its digits is 331776, while the sum is 42.

The square root of 234386628 is about 15309.6906565744. The cubic root of 234386628 is about 616.5632147212.

The spelling of 234386628 in words is "two hundred thirty-four million, three hundred eighty-six thousand, six hundred twenty-eight".