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133492 = 22231451
BaseRepresentation
bin100000100101110100
320210010011
4200211310
513232432
62510004
71064122
oct404564
9223104
10133492
1191327
1265304
13489b8
1436912
1529847
hex20974

133492 has 12 divisors (see below), whose sum is σ = 243936. Its totient is φ = 63800.

The previous prime is 133481. The next prime is 133493. The reversal of 133492 is 294331.

It can be divided in two parts, 133 and 492, that added together give a 4-th power (625 = 54).

It is a super-2 number, since 2×1334922 = 35640228128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133493) by changing a digit.

133492 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 634 + ... + 817.

It is an arithmetic number, because the mean of its divisors is an integer number (20328).

2133492 is an apocalyptic number.

It is an amenable number.

133492 is a deficient number, since it is larger than the sum of its proper divisors (110444).

133492 is a wasteful number, since it uses less digits than its factorization.

133492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1478 (or 1476 counting only the distinct ones).

The product of its digits is 648, while the sum is 22.

The square root of 133492 is about 365.3655703539. The cubic root of 133492 is about 51.1075520871.

The spelling of 133492 in words is "one hundred thirty-three thousand, four hundred ninety-two".

Divisors: 1 2 4 23 46 92 1451 2902 5804 33373 66746 133492