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13047942 = 2317127921
BaseRepresentation
bin110001110001…
…100010000110
3220112220102010
4301301202012
511320013232
61143355050
7215622435
oct61614206
926486363
1013047942
117402126
124452a86
13291ac9b
141a3911c
15122b0cc
hexc71886

13047942 has 16 divisors (see below), whose sum is σ = 27631152. Its totient is φ = 4093440.

The previous prime is 13047929. The next prime is 13047943. The reversal of 13047942 is 24974031.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13047943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63859 + ... + 64062.

It is an arithmetic number, because the mean of its divisors is an integer number (1726947).

Almost surely, 213047942 is an apocalyptic number.

13047942 is an abundant number, since it is smaller than the sum of its proper divisors (14583210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13047942 is a wasteful number, since it uses less digits than its factorization.

13047942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127943.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 13047942 is about 3612.1935164108. The cubic root of 13047942 is about 235.4221595328.

The spelling of 13047942 in words is "thirteen million, forty-seven thousand, nine hundred forty-two".

Divisors: 1 2 3 6 17 34 51 102 127921 255842 383763 767526 2174657 4349314 6523971 13047942