621762272 has 12 divisors (see below), whose sum is σ = 1224094536. Its totient is φ = 310881120.

The previous prime is 621762263. The next prime is 621762283. The reversal of 621762272 is 272267126.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9715004 + ... + 9715067.

It is an arithmetic number, because the mean of its divisors is an integer number (102007878).

Almost surely, 2^621762272 is an apocalyptic number.

It is an amenable number.

621762272 is a deficient number, since it is larger than the sum of its proper divisors (602332264).

621762272 is a wasteful number, since it uses less digits than its factorization.

621762272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19430081 (or 19430073 counting only the distinct ones).

The product of its digits is 28224, while the sum is 35.

The square root of 621762272 is about 24935.1613590127. The cubic root of 621762272 is about 853.5090333741.

The spelling of 621762272 in words is "six hundred twenty-one million, seven hundred sixty-two thousand, two hundred seventy-two".