621132430 has 16 divisors (see below), whose sum is σ = 1154104704. Its totient is φ = 240438240.

The previous prime is 621132403. The next prime is 621132487. The reversal of 621132430 is 34231126.

It is a congruent number.

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, 1001517 + ... + 1002136.

It is an arithmetic number, because the mean of its divisors is an integer number (72131544).

Almost surely, 2^621132430 is an apocalyptic number.

621132430 is a deficient number, since it is larger than the sum of its proper divisors (532972274).

621132430 is a wasteful number, since it uses less digits than its factorization.

621132430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2003691.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 621132430 is about 24922.5285635306. The cubic root of 621132430 is about 853.2207359097.

Adding to 621132430 its reverse (34231126), we get a palindrome (655363556).

The spelling of 621132430 in words is "six hundred twenty-one million, one hundred thirty-two thousand, four hundred thirty".