390062500 has 63 divisors (see below), whose sum is σ = 864188157. Its totient is φ = 154050000.

The previous prime is 390062489. The next prime is 390062507. The reversal of 390062500 is 5260093.

The square root of 390062500 is 19750.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 3 ways, for example, as 341732196 + 48330304 = 18486^2 + 6952^2 .

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (390062507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 4937461 + ... + 4937539.

Almost surely, 2^390062500 is an apocalyptic number.

390062500 is the 19750-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 390062500

390062500 is an abundant number, since it is smaller than the sum of its proper divisors (474125657).

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

390062500 is an frugal number, since it uses more digits than its factorization.

390062500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 25.

The cubic root of 390062500 is about 730.6533838663.

Multiplying 390062500 by its sum of digits (25), we get a square (9751562500 = 98750²).

390062500 divided by its sum of digits (25) gives a square (15602500 = 3950²).

The spelling of 390062500 in words is "three hundred ninety million, sixty-two thousand, five hundred".