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390604244 = 22173564457
BaseRepresentation
bin10111010010000…
…010010111010100
31000012222202021212
4113102002113110
51244443313434
6102432000552
712452036612
oct2722022724
91005882255
10390604244
11190538828
12aa990158
1362c01a94
1439c3a6b2
15244598ce
hex174825d4

390604244 has 12 divisors (see below), whose sum is σ = 687509844. Its totient is φ = 194172864.

The previous prime is 390604243. The next prime is 390604259. The reversal of 390604244 is 442406093.

It can be written as a sum of positive squares in 2 ways, for example, as 352312900 + 38291344 = 18770^2 + 6188^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 390604244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390604243) 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, 281537 + ... + 282920.

It is an arithmetic number, because the mean of its divisors is an integer number (57292487).

Almost surely, 2390604244 is an apocalyptic number.

It is an amenable number.

390604244 is a deficient number, since it is larger than the sum of its proper divisors (296905600).

390604244 is a wasteful number, since it uses less digits than its factorization.

390604244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564634 (or 564632 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 390604244 is about 19763.7102791961. The cubic root of 390604244 is about 730.9914869293.

The spelling of 390604244 in words is "three hundred ninety million, six hundred four thousand, two hundred forty-four".

Divisors: 1 2 4 173 346 692 564457 1128914 2257828 97651061 195302122 390604244