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28379454 = 235478647
BaseRepresentation
bin110110001000…
…0100100111110
31222101211021220
41230100210332
524231120304
62452134210
7463135635
oct154204476
958354256
1028379454
11150239a4
129607366
135b5849c
143aaa51c
152758ad9
hex1b1093e

28379454 has 16 divisors (see below), whose sum is σ = 56869248. Its totient is φ = 9441432.

The previous prime is 28379453. The next prime is 28379459. The reversal of 28379454 is 45497382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28379453) 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, 1042 + ... + 7605.

It is an arithmetic number, because the mean of its divisors is an integer number (3554328).

Almost surely, 228379454 is an apocalyptic number.

28379454 is an abundant number, since it is smaller than the sum of its proper divisors (28489794).

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

28379454 is a wasteful number, since it uses less digits than its factorization.

28379454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9199.

The product of its digits is 241920, while the sum is 42.

The square root of 28379454 is about 5327.2369949158. The cubic root of 28379454 is about 305.0244681615.

The spelling of 28379454 in words is "twenty-eight million, three hundred seventy-nine thousand, four hundred fifty-four".

Divisors: 1 2 3 6 547 1094 1641 3282 8647 17294 25941 51882 4729909 9459818 14189727 28379454