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28977054 = 234829509
BaseRepresentation
bin110111010001…
…0011110011110
32000112012001020
41232202132132
524404231204
62513025010
7501205131
oct156423636
960465036
1028977054
11153a1987
129855166
1360074b2
143bc4218
152825bd9
hex1ba279e

28977054 has 8 divisors (see below), whose sum is σ = 57954120. Its totient is φ = 9659016.

The previous prime is 28977049. The next prime is 28977059. The reversal of 28977054 is 45077982.

It is an interprime number because it is at equal distance from previous prime (28977049) and next prime (28977059).

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

28977054 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28976997 and 28977015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28977059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2414749 + ... + 2414760.

It is an arithmetic number, because the mean of its divisors is an integer number (7244265).

Almost surely, 228977054 is an apocalyptic number.

28977054 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28977054 is a wasteful number, since it uses less digits than its factorization.

28977054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4829514.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 28977054 is about 5383.0339029213. The cubic root of 28977054 is about 307.1506297139.

The spelling of 28977054 in words is "twenty-eight million, nine hundred seventy-seven thousand, fifty-four".

Divisors: 1 2 3 6 4829509 9659018 14488527 28977054