520149630 has 128 divisors (see below), whose sum is σ = 1676215296. Its totient is φ = 99763200.

The previous prime is 520149593. The next prime is 520149647. The reversal of 520149630 is 36941025.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21370 + ... + 38690.

It is an arithmetic number, because the mean of its divisors is an integer number (13095432).

Almost surely, 2^520149630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520149630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (838107648).

520149630 is an abundant number, since it is smaller than the sum of its proper divisors (1156065666).

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

520149630 is a wasteful number, since it uses less digits than its factorization.

520149630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17362.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 520149630 is about 22806.7891207859. The cubic root of 520149630 is about 804.2222752433. Note that the first 4 decimals are identical.

The spelling of 520149630 in words is "five hundred twenty million, one hundred forty-nine thousand, six hundred thirty".