621413272 has 16 divisors (see below), whose sum is σ = 1166306400. Its totient is φ = 310398240.

The previous prime is 621413269. The next prime is 621413279. The reversal of 621413272 is 272314126.

It is a self number, because there is not a number n which added to its sum of digits gives 621413272.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621413279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29872 + ... + 46207.

It is an arithmetic number, because the mean of its divisors is an integer number (72894150).

Almost surely, 2^621413272 is an apocalyptic number.

It is an amenable number.

621413272 is a deficient number, since it is larger than the sum of its proper divisors (544893128).

621413272 is a wasteful number, since it uses less digits than its factorization.

621413272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77106 (or 77102 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 621413272 is about 24928.1622266865. The cubic root of 621413272 is about 853.3493097323.

Adding to 621413272 its reverse (272314126), we get a palindrome (893727398).

The spelling of 621413272 in words is "six hundred twenty-one million, four hundred thirteen thousand, two hundred seventy-two".