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190312 = 2323789
BaseRepresentation
bin101110011101101000
3100200001121
4232131220
522042222
64025024
71421563
oct563550
9320047
10190312
1111aa91
1292174
1368815
144d4da
153b5c7
hex2e768

190312 has 8 divisors (see below), whose sum is σ = 356850. Its totient is φ = 95152.

The previous prime is 190301. The next prime is 190313. The reversal of 190312 is 213091.

It can be written as a sum of positive squares in only one way, i.e., 181476 + 8836 = 426^2 + 94^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (190313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11887 + ... + 11902.

2190312 is an apocalyptic number.

It is an amenable number.

190312 is a deficient number, since it is larger than the sum of its proper divisors (166538).

190312 is a wasteful number, since it uses less digits than its factorization.

190312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23795 (or 23791 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 190312 is about 436.2476360967. The cubic root of 190312 is about 57.5204212279.

The spelling of 190312 in words is "one hundred ninety thousand, three hundred twelve".

Divisors: 1 2 4 8 23789 47578 95156 190312