234778628 has 24 divisors (see below), whose sum is σ = 481012224. Its totient is φ = 98164800.

The previous prime is 234778601. The next prime is 234778639. The reversal of 234778628 is 826877432.

234778628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101108 + ... + 103403.

It is an arithmetic number, because the mean of its divisors is an integer number (20042176).

Almost surely, 2^234778628 is an apocalyptic number.

234778628 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

234778628 is an abundant number, since it is smaller than the sum of its proper divisors (246233596).

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

234778628 is a wasteful number, since it uses less digits than its factorization.

234778628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204563 (or 204561 counting only the distinct ones).

The product of its digits is 903168, while the sum is 47.

The square root of 234778628 is about 15322.4876570353. The cubic root of 234778628 is about 616.9067470685.

The spelling of 234778628 in words is "two hundred thirty-four million, seven hundred seventy-eight thousand, six hundred twenty-eight".