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28072674 = 2327222799
BaseRepresentation
bin110101100010…
…1101011100010
31221211020110200
41223011223202
524141311144
62441410030
7460420350
oct153055342
957736420
1028072674
1114934463
129499916
135a7b966
143a2a7d0
1526e7c69
hex1ac5ae2

28072674 has 24 divisors (see below), whose sum is σ = 69513600. Its totient is φ = 8020728.

The previous prime is 28072651. The next prime is 28072687. The reversal of 28072674 is 47627082.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111274 + ... + 111525.

It is an arithmetic number, because the mean of its divisors is an integer number (2896400).

Almost surely, 228072674 is an apocalyptic number.

28072674 is an abundant number, since it is smaller than the sum of its proper divisors (41440926).

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

28072674 is a wasteful number, since it uses less digits than its factorization.

28072674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222814 (or 222811 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 28072674 is about 5298.3652195748. The cubic root of 28072674 is about 303.9213857779.

The spelling of 28072674 in words is "twenty-eight million, seventy-two thousand, six hundred seventy-four".

Divisors: 1 2 3 6 7 9 14 18 21 42 63 126 222799 445598 668397 1336794 1559593 2005191 3119186 4010382 4678779 9357558 14036337 28072674