390628474 has 8 divisors (see below), whose sum is σ = 586519668. Its totient is φ = 195121920.

The previous prime is 390628471. The next prime is 390628477. The reversal of 390628474 is 474826093.

It is an interprime number because it is at equal distance from previous prime (390628471) and next prime (390628477).

It can be written as a sum of positive squares in 2 ways, for example, as 390260025 + 368449 = 19755^2 + 607^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 390628474.

It is not an unprimeable number, because it can be changed into a prime (390628471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93607 + ... + 97690.

Almost surely, 2^390628474 is an apocalyptic number.

390628474 is a deficient number, since it is larger than the sum of its proper divisors (195891194).

390628474 is a wasteful number, since it uses less digits than its factorization.

390628474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192320.

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 390628474 is about 19764.3232618777. The cubic root of 390628474 is about 731.0066015948.

The spelling of 390628474 in words is "three hundred ninety million, six hundred twenty-eight thousand, four hundred seventy-four".