390223600 has 120 divisors (see below), whose sum is σ = 1020997152. Its totient is φ = 142464000.

The previous prime is 390223591. The next prime is 390223619. The reversal of 390223600 is 6322093.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 524829 + ... + 525571.

Almost surely, 2^390223600 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 390223600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (510498576).

390223600 is an abundant number, since it is smaller than the sum of its proper divisors (630773552).

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

390223600 is a wasteful number, since it uses less digits than its factorization.

390223600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875 (or 864 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 390223600 is about 19754.0780599855. The cubic root of 390223600 is about 730.7539592519.

Adding to 390223600 its reverse (6322093), we get a palindrome (396545693).

The spelling of 390223600 in words is "three hundred ninety million, two hundred twenty-three thousand, six hundred".