620031426 has 64 divisors (see below), whose sum is σ = 1497415680. Its totient is φ = 167388480.

The previous prime is 620031409. The next prime is 620031431. The reversal of 620031426 is 624130026.

It is a junction number, because it is equal to n+sod(n) for n = 620031396 and 620031405.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51831 + ... + 62661.

It is an arithmetic number, because the mean of its divisors is an integer number (23397120).

Almost surely, 2^620031426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 620031426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (748707840).

620031426 is an abundant number, since it is smaller than the sum of its proper divisors (877384254).

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

620031426 is a wasteful number, since it uses less digits than its factorization.

620031426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10919.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 620031426 is about 24900.4302372469. The cubic root of 620031426 is about 852.7163050793.

The spelling of 620031426 in words is "six hundred twenty million, thirty-one thousand, four hundred twenty-six".