621236472 has 16 divisors (see below), whose sum is σ = 1553091240. Its totient is φ = 207078816.

The previous prime is 621236461. The next prime is 621236489. The reversal of 621236472 is 274632126.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12942403 + ... + 12942450.

Almost surely, 2^621236472 is an apocalyptic number.

It is an amenable number.

621236472 is an abundant number, since it is smaller than the sum of its proper divisors (931854768).

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

621236472 is a wasteful number, since it uses less digits than its factorization.

621236472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25884862 (or 25884858 counting only the distinct ones).

The product of its digits is 24192, while the sum is 33.

The square root of 621236472 is about 24924.6157844008. The cubic root of 621236472 is about 853.2683724692.

Adding to 621236472 its reverse (274632126), we get a palindrome (895868598).

The spelling of 621236472 in words is "six hundred twenty-one million, two hundred thirty-six thousand, four hundred seventy-two".