234395820 has 36 divisors (see below), whose sum is σ = 711001200. Its totient is φ = 62505504.

The previous prime is 234395809. The next prime is 234395827. The reversal of 234395820 is 28593432.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (234395827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 650920 + ... + 651279.

Almost surely, 2^234395820 is an apocalyptic number.

234395820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

234395820 is an abundant number, since it is smaller than the sum of its proper divisors (476605380).

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

234395820 is a wasteful number, since it uses less digits than its factorization.

234395820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302214 (or 1302209 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 234395820 is about 15309.9908556472. The cubic root of 234395820 is about 616.5712745880.

The spelling of 234395820 in words is "two hundred thirty-four million, three hundred ninety-five thousand, eight hundred twenty".