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47390238 = 2337125371
BaseRepresentation
bin1011010011000…
…1111000011110
310022011200012000
42310301320132
544112441423
64411423130
71113544650
oct264617036
9108150160
1047390238
1124828a95
1213a54aa6
139a8357c
1464186d0
154261843
hex2d31e1e

47390238 has 32 divisors (see below), whose sum is σ = 120357120. Its totient is φ = 13539960.

The previous prime is 47390221. The next prime is 47390251. The reversal of 47390238 is 83209374.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62308 + ... + 63063.

It is an arithmetic number, because the mean of its divisors is an integer number (3761160).

Almost surely, 247390238 is an apocalyptic number.

47390238 is an abundant number, since it is smaller than the sum of its proper divisors (72966882).

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

47390238 is a wasteful number, since it uses less digits than its factorization.

47390238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125389 (or 125383 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 47390238 is about 6884.0567981387. The cubic root of 47390238 is about 361.8786514706.

The spelling of 47390238 in words is "forty-seven million, three hundred ninety thousand, two hundred thirty-eight".

Divisors: 1 2 3 6 7 9 14 18 21 27 42 54 63 126 189 378 125371 250742 376113 752226 877597 1128339 1755194 2256678 2632791 3385017 5265582 6770034 7898373 15796746 23695119 47390238