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28474874 = 223619019
BaseRepresentation
bin110110010011…
…1110111111010
31222120200011222
41230213313322
524242143444
62454152042
7464014061
oct154476772
958520158
1028474874
111508965a
129652622
135b8ca4c
143ad31d8
152776eee
hex1b27dfa

28474874 has 8 divisors (see below), whose sum is σ = 44569440. Its totient is φ = 13618396.

The previous prime is 28474871. The next prime is 28474883. The reversal of 28474874 is 47847482.

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

It is not an unprimeable number, because it can be changed into a prime (28474871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 309464 + ... + 309555.

It is an arithmetic number, because the mean of its divisors is an integer number (5571180).

Almost surely, 228474874 is an apocalyptic number.

28474874 is a deficient number, since it is larger than the sum of its proper divisors (16094566).

28474874 is a wasteful number, since it uses less digits than its factorization.

28474874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619044.

The product of its digits is 401408, while the sum is 44.

The square root of 28474874 is about 5336.1853416087. The cubic root of 28474874 is about 305.3659461339.

The spelling of 28474874 in words is "twenty-eight million, four hundred seventy-four thousand, eight hundred seventy-four".

Divisors: 1 2 23 46 619019 1238038 14237437 28474874