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38157894 = 23217124699
BaseRepresentation
bin1001000110001…
…1111001000110
32122210121210100
42101203321012
534232023034
63441504530
7642223335
oct221437106
978717710
1038157894
111a5a2655
1210942146
137ba0248
1450d3d1c
15353b099
hex2463e46

38157894 has 24 divisors (see below), whose sum is σ = 87539400. Its totient is φ = 11971008.

The previous prime is 38157893. The next prime is 38157913. The reversal of 38157894 is 49875183.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38157893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62044 + ... + 62655.

It is an arithmetic number, because the mean of its divisors is an integer number (3647475).

Almost surely, 238157894 is an apocalyptic number.

38157894 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

38157894 is an abundant number, since it is smaller than the sum of its proper divisors (49381506).

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

38157894 is a wasteful number, since it uses less digits than its factorization.

38157894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124724 (or 124721 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 38157894 is about 6177.2076215714. The cubic root of 38157894 is about 336.6625426196.

The spelling of 38157894 in words is "thirty-eight million, one hundred fifty-seven thousand, eight hundred ninety-four".

Divisors: 1 2 3 6 9 17 18 34 51 102 153 306 124699 249398 374097 748194 1122291 2119883 2244582 4239766 6359649 12719298 19078947 38157894