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28813054 = 214406527
BaseRepresentation
bin110110111101…
…0011011111110
32000012212002011
41231322123332
524334004204
62505321434
7466623034
oct155723376
960185064
1028813054
111529a746
12979627a
135c7a95a
143b80554
1527e2304
hex1b7a6fe

28813054 has 4 divisors (see below), whose sum is σ = 43219584. Its totient is φ = 14406526.

The previous prime is 28813049. The next prime is 28813061. The reversal of 28813054 is 45031882.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7203262 + ... + 7203265.

It is an arithmetic number, because the mean of its divisors is an integer number (10804896).

Almost surely, 228813054 is an apocalyptic number.

28813054 is a deficient number, since it is larger than the sum of its proper divisors (14406530).

28813054 is a wasteful number, since it uses less digits than its factorization.

28813054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14406529.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 28813054 is about 5367.7792428527. The cubic root of 28813054 is about 306.5700780144.

The spelling of 28813054 in words is "twenty-eight million, eight hundred thirteen thousand, fifty-four".

Divisors: 1 2 14406527 28813054