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28514953 = 191500787
BaseRepresentation
bin110110011000…
…1101010001001
31222122201011101
41230301222021
524244434303
62455101401
7464241655
oct154615211
958581141
1028514953
1115106785
129671861
135ba506c
143b03a65
152783d1d
hex1b31a89

28514953 has 4 divisors (see below), whose sum is σ = 30015760. Its totient is φ = 27014148.

The previous prime is 28514951. The next prime is 28514957. The reversal of 28514953 is 35941582.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28514953 - 21 = 28514951 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28514951) 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, 750375 + ... + 750412.

It is an arithmetic number, because the mean of its divisors is an integer number (7503940).

Almost surely, 228514953 is an apocalyptic number.

It is an amenable number.

28514953 is a deficient number, since it is larger than the sum of its proper divisors (1500807).

28514953 is a wasteful number, since it uses less digits than its factorization.

28514953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500806.

The product of its digits is 43200, while the sum is 37.

The square root of 28514953 is about 5339.9394191320. The cubic root of 28514953 is about 305.5091486890.

The spelling of 28514953 in words is "twenty-eight million, five hundred fourteen thousand, nine hundred fifty-three".

Divisors: 1 19 1500787 28514953