621948450 has 24 divisors (see below), whose sum is σ = 1542432528. Its totient is φ = 165852880.

The previous prime is 621948407. The next prime is 621948461. The reversal of 621948450 is 54849126.

It is a junction number, because it is equal to n+sod(n) for n = 621948399 and 621948408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2073012 + ... + 2073311.

It is an arithmetic number, because the mean of its divisors is an integer number (64268022).

Almost surely, 2^621948450 is an apocalyptic number.

621948450 is an abundant number, since it is smaller than the sum of its proper divisors (920484078).

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

621948450 is a wasteful number, since it uses less digits than its factorization.

621948450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4146338 (or 4146333 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 621948450 is about 24938.8943219221. The cubic root of 621948450 is about 853.5942153126.

The spelling of 621948450 in words is "six hundred twenty-one million, nine hundred forty-eight thousand, four hundred fifty".