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23133994 = 213889769
BaseRepresentation
bin101100000111…
…1111100101010
31121112022212121
41120033330222
521410241434
62143501454
7400431022
oct130177452
947468777
1023133994
1112070a04
1278b788a
134a3ca70
143102a82
15206e7b4
hex160ff2a

23133994 has 8 divisors (see below), whose sum is σ = 37370340. Its totient is φ = 10677216.

The previous prime is 23133977. The next prime is 23134019. The reversal of 23133994 is 49933132.

It can be written as a sum of positive squares in 2 ways, for example, as 19847025 + 3286969 = 4455^2 + 1813^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444859 + ... + 444910.

Almost surely, 223133994 is an apocalyptic number.

23133994 is a deficient number, since it is larger than the sum of its proper divisors (14236346).

23133994 is a wasteful number, since it uses less digits than its factorization.

23133994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889784.

The product of its digits is 17496, while the sum is 34.

The square root of 23133994 is about 4809.7810760990. The cubic root of 23133994 is about 284.9378914624.

It can be divided in two parts, 231 and 33994, that added together give a square (34225 = 1852).

The spelling of 23133994 in words is "twenty-three million, one hundred thirty-three thousand, nine hundred ninety-four".

Divisors: 1 2 13 26 889769 1779538 11566997 23133994