234433621 has 8 divisors (see below), whose sum is σ = 249087960. Its totient is φ = 220638784.

The previous prime is 234433607. The next prime is 234433627. The reversal of 234433621 is 126334432.

It can be written as a sum of positive squares in 4 ways, for example, as 24502500 + 209931121 = 4950^2 + 14489^2 .

It is not a de Polignac number, because 234433621 - 2²¹ = 232336469 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 234433621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234433627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18946 + ... + 28771.

It is an arithmetic number, because the mean of its divisors is an integer number (31135995).

Almost surely, 2^234433621 is an apocalyptic number.

It is an amenable number.

234433621 is a deficient number, since it is larger than the sum of its proper divisors (14654339).

234433621 is an frugal number, since it uses more digits than its factorization.

234433621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47768 (or 47734 counting only the distinct ones).

The product of its digits is 10368, while the sum is 28.

The square root of 234433621 is about 15311.2253265374. The cubic root of 234433621 is about 616.6044176107.

The spelling of 234433621 in words is "two hundred thirty-four million, four hundred thirty-three thousand, six hundred twenty-one".