390233500 has 48 divisors (see below), whose sum is σ = 854223552. Its totient is φ = 155736000.

The previous prime is 390233489. The next prime is 390233509. The reversal of 390233500 is 5332093.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390233509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 377985 + ... + 379015.

It is an arithmetic number, because the mean of its divisors is an integer number (17796324).

Almost surely, 2^390233500 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 390233500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (427111776).

390233500 is an abundant number, since it is smaller than the sum of its proper divisors (463990052).

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

390233500 is a wasteful number, since it uses less digits than its factorization.

390233500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1807 (or 1795 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 25.

The square root of 390233500 is about 19754.3286395666. The cubic root of 390233500 is about 730.7601389593.

Adding to 390233500 its reverse (5332093), we get a palindrome (395565593).

The spelling of 390233500 in words is "three hundred ninety million, two hundred thirty-three thousand, five hundred".