620431224 has 32 divisors (see below), whose sum is σ = 1772661120. Its totient is φ = 177266016.

The previous prime is 620431223. The next prime is 620431267. The reversal of 620431224 is 422134026.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 620431194 and 620431203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620431223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1846354 + ... + 1846689.

It is an arithmetic number, because the mean of its divisors is an integer number (55395660).

Almost surely, 2^620431224 is an apocalyptic number.

It is an amenable number.

620431224 is an abundant number, since it is smaller than the sum of its proper divisors (1152229896).

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

620431224 is a wasteful number, since it uses less digits than its factorization.

620431224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3693059 (or 3693055 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 620431224 is about 24908.4568771331. The cubic root of 620431224 is about 852.8995436546.

The spelling of 620431224 in words is "six hundred twenty million, four hundred thirty-one thousand, two hundred twenty-four".