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28816403 = 711374239
BaseRepresentation
bin110110111101…
…1010000010011
32000020000200012
41231323100103
524334111103
62505345135
7466635560
oct155732023
960200605
1028816403
11152a2210
1297981ab
135c7c335
143b81867
1527e32d8
hex1b7b413

28816403 has 8 divisors (see below), whose sum is σ = 35927040. Its totient is φ = 22454280.

The previous prime is 28816397. The next prime is 28816409. The reversal of 28816403 is 30461882.

It is an interprime number because it is at equal distance from previous prime (28816397) and next prime (28816409).

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 28816403 - 210 = 28815379 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28816403.

It is not an unprimeable number, because it can be changed into a prime (28816409) 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, 187043 + ... + 187196.

It is an arithmetic number, because the mean of its divisors is an integer number (4490880).

Almost surely, 228816403 is an apocalyptic number.

28816403 is a deficient number, since it is larger than the sum of its proper divisors (7110637).

28816403 is a wasteful number, since it uses less digits than its factorization.

28816403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374257.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 28816403 is about 5368.0911877501. The cubic root of 28816403 is about 306.5819553093.

The spelling of 28816403 in words is "twenty-eight million, eight hundred sixteen thousand, four hundred three".

Divisors: 1 7 11 77 374239 2619673 4116629 28816403