304253253 has 36 divisors (see below), whose sum is σ = 462920640. Its totient is φ = 199926792.

The previous prime is 304253249. The next prime is 304253263. The reversal of 304253253 is 352352403.

It is not a de Polignac number, because 304253253 - 2² = 304253249 is a prime.

It is a super-2 number, since 2×304253253² = 185140083922164018, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304253203) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 518026 + ... + 518612.

Almost surely, 2^304253253 is an apocalyptic number.

It is an amenable number.

304253253 is a deficient number, since it is larger than the sum of its proper divisors (158667387).

304253253 is an frugal number, since it uses more digits than its factorization.

304253253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690 (or 669 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 27.

The square root of 304253253 is about 17442.8567901018. The cubic root of 304253253 is about 672.5817467180.

The spelling of 304253253 in words is "three hundred four million, two hundred fifty-three thousand, two hundred fifty-three".