621242352 has 40 divisors (see below), whose sum is σ = 1783196880. Its totient is φ = 207080640.

The previous prime is 621242341. The next prime is 621242393. The reversal of 621242352 is 253242126.

It is a happy number.

621242352 is a `hidden beast` number, since 621 + 2 + 4 + 2 + 35 + 2 = 666.

621242352 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

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, 718599 + ... + 719462.

It is an arithmetic number, because the mean of its divisors is an integer number (44579922).

Almost surely, 2^621242352 is an apocalyptic number.

It is an amenable number.

621242352 is an abundant number, since it is smaller than the sum of its proper divisors (1161954528).

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

621242352 is a wasteful number, since it uses less digits than its factorization.

621242352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1438078 (or 1438066 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 621242352 is about 24924.7337398015. The cubic root of 621242352 is about 853.2710645209.

Adding to 621242352 its reverse (253242126), we get a palindrome (874484478).

The spelling of 621242352 in words is "six hundred twenty-one million, two hundred forty-two thousand, three hundred fifty-two".