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28025358 = 234670893
BaseRepresentation
bin110101011101…
…0001000001110
31221201211120020
41222322020032
524133302413
62440403010
7460132404
oct152721016
957654506
1028025358
1114901959
129476466
135a6326a
143a17474
1526d8c23
hex1aba20e

28025358 has 8 divisors (see below), whose sum is σ = 56050728. Its totient is φ = 9341784.

The previous prime is 28025353. The next prime is 28025381. The reversal of 28025358 is 85352082.

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

28025358 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28025351) 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, 2335441 + ... + 2335452.

It is an arithmetic number, because the mean of its divisors is an integer number (7006341).

Almost surely, 228025358 is an apocalyptic number.

28025358 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.

28025358 is a wasteful number, since it uses less digits than its factorization.

28025358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4670898.

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 28025358 is about 5293.8981856473. The cubic root of 28025358 is about 303.7505383655.

The spelling of 28025358 in words is "twenty-eight million, twenty-five thousand, three hundred fifty-eight".

Divisors: 1 2 3 6 4670893 9341786 14012679 28025358