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28995461 = 1111323327
BaseRepresentation
bin110111010011…
…0111110000101
32000120010021222
41232212332011
524410323321
62513250125
7501312605
oct156467605
960503258
1028995461
11154047a0
129863945
1360129a1
143bcac05
15282b3ab
hex1ba6f85

28995461 has 8 divisors (see below), whose sum is σ = 31912704. Its totient is φ = 26125120.

The previous prime is 28995443. The next prime is 28995481. The reversal of 28995461 is 16459982.

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

It is a cyclic number.

It is not a de Polignac number, because 28995461 - 26 = 28995397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28995401) 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, 10421 + ... + 12906.

It is an arithmetic number, because the mean of its divisors is an integer number (3989088).

Almost surely, 228995461 is an apocalyptic number.

It is an amenable number.

28995461 is a deficient number, since it is larger than the sum of its proper divisors (2917243).

28995461 is a wasteful number, since it uses less digits than its factorization.

28995461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23451.

The product of its digits is 155520, while the sum is 44.

The square root of 28995461 is about 5384.7433550727. The cubic root of 28995461 is about 307.2156527138.

The spelling of 28995461 in words is "twenty-eight million, nine hundred ninety-five thousand, four hundred sixty-one".

Divisors: 1 11 113 1243 23327 256597 2635951 28995461