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28835157 = 313739363
BaseRepresentation
bin110110111111…
…1110101010101
32000020222101210
41231333311111
524340211112
62510012033
7500044341
oct155776525
960228353
1028835157
111530530a
1297a7019
135c87a30
143b88621
1527e8b3c
hex1b7fd55

28835157 has 8 divisors (see below), whose sum is σ = 41404384. Its totient is φ = 17744688.

The previous prime is 28835137. The next prime is 28835167. The reversal of 28835157 is 75153882.

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

It is not a de Polignac number, because 28835157 - 27 = 28835029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 739363 = 28835157 / (2 + 8 + 8 + 3 + 5 + 1 + 5 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28835117) 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, 369643 + ... + 369720.

It is an arithmetic number, because the mean of its divisors is an integer number (5175548).

Almost surely, 228835157 is an apocalyptic number.

It is an amenable number.

28835157 is a deficient number, since it is larger than the sum of its proper divisors (12569227).

28835157 is a wasteful number, since it uses less digits than its factorization.

28835157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739379.

The product of its digits is 67200, while the sum is 39.

The square root of 28835157 is about 5369.8377070448. The cubic root of 28835157 is about 306.6484497423.

The spelling of 28835157 in words is "twenty-eight million, eight hundred thirty-five thousand, one hundred fifty-seven".

Divisors: 1 3 13 39 739363 2218089 9611719 28835157