620424024 has 128 divisors (see below), whose sum is σ = 1793664000. Its totient is φ = 176860800.

The previous prime is 620424023. The next prime is 620424031. The reversal of 620424024 is 420424026.

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 = 620423985 and 620424003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620424023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 897519 + ... + 898209.

It is an arithmetic number, because the mean of its divisors is an integer number (14013000).

Almost surely, 2^620424024 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 620424024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (896832000).

620424024 is an abundant number, since it is smaller than the sum of its proper divisors (1173239976).

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

620424024 is a wasteful number, since it uses less digits than its factorization.

620424024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909 (or 905 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 620424024 is about 24908.3123474875. The cubic root of 620424024 is about 852.8962443899.

It can be divided in two parts, 62042 and 4024, that added together give a palindrome (66066).

The spelling of 620424024 in words is "six hundred twenty million, four hundred twenty-four thousand, twenty-four".