620431922 has 8 divisors (see below), whose sum is σ = 1015252272. Its totient is φ = 282014500.

The previous prime is 620431919. The next prime is 620431927. The reversal of 620431922 is 229134026.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×620431922² = 769871539673228168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (620431927) 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, 14100704 + ... + 14100747.

It is an arithmetic number, because the mean of its divisors is an integer number (126906534).

Almost surely, 2^620431922 is an apocalyptic number.

620431922 is a deficient number, since it is larger than the sum of its proper divisors (394820350).

620431922 is a wasteful number, since it uses less digits than its factorization.

620431922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28201464.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 620431922 is about 24908.4708884347. The cubic root of 620431922 is about 852.8998634986.

Adding to 620431922 its reverse (229134026), we get a palindrome (849565948).

The spelling of 620431922 in words is "six hundred twenty million, four hundred thirty-one thousand, nine hundred twenty-two".