621262432 has 48 divisors (see below), whose sum is σ = 1402464672. Its totient is φ = 265374720.

The previous prime is 621262429. The next prime is 621262441. The reversal of 621262432 is 234262126.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 621262432.

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 7 ways as a sum of consecutive naturals, for example, 65682 + ... + 74542.

It is an arithmetic number, because the mean of its divisors is an integer number (29218014).

Almost surely, 2^621262432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 621262432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (701232336).

621262432 is an abundant number, since it is smaller than the sum of its proper divisors (781202240).

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

621262432 is a wasteful number, since it uses less digits than its factorization.

621262432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9191 (or 9183 counting only the distinct ones).

The product of its digits is 6912, while the sum is 28.

The square root of 621262432 is about 24925.1365492749. The cubic root of 621262432 is about 853.2802576581.

It can be divided in two parts, 6212 and 62432, that added together give a square (68644 = 262²).

The spelling of 621262432 in words is "six hundred twenty-one million, two hundred sixty-two thousand, four hundred thirty-two".