390130830 has 160 divisors (see below), whose sum is σ = 1122384384. Its totient is φ = 96997824.

The previous prime is 390130817. The next prime is 390130831. The reversal of 390130830 is 38031093.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 390130794 and 390130803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390130831) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 800847 + ... + 801333.

Almost surely, 2^390130830 is an apocalyptic number.

390130830 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 390130830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (561192192).

390130830 is an abundant number, since it is smaller than the sum of its proper divisors (732253554).

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

390130830 is a wasteful number, since it uses less digits than its factorization.

390130830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572 (or 563 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 390130830 is about 19751.7297976658. The cubic root of 390130830 is about 730.6960459446.

The spelling of 390130830 in words is "three hundred ninety million, one hundred thirty thousand, eight hundred thirty".