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392090 = 2539209
BaseRepresentation
bin1011111101110011010
3201220211212
41133232122
5100021330
612223122
73222056
oct1375632
9656755
10392090
11248646
1216aaa2
1310960a
14a2c66
157b295
hex5fb9a

392090 has 8 divisors (see below), whose sum is σ = 705780. Its totient is φ = 156832.

The previous prime is 392087. The next prime is 392099. The reversal of 392090 is 90293.

It can be written as a sum of positive squares in 2 ways, for example, as 373321 + 18769 = 611^2 + 137^2 .

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

It is a super-3 number, since 3×3920903 = 180833360418987000, which contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (392099) 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, 19595 + ... + 19614.

2392090 is an apocalyptic number.

392090 is a deficient number, since it is larger than the sum of its proper divisors (313690).

392090 is a wasteful number, since it uses less digits than its factorization.

392090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39216.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 392090 is about 626.1709031886. The cubic root of 392090 is about 73.1917147500.

The spelling of 392090 in words is "three hundred ninety-two thousand, ninety".

Divisors: 1 2 5 10 39209 78418 196045 392090