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28794838 = 217978731
BaseRepresentation
bin110110111010…
…1111111010110
32000011221002111
41231311333112
524332413323
62505101234
7466515652
oct155657726
960157074
1028794838
1115287a96
12978781a
135c72587
143b77a62
1527dbc0d
hex1b75fd6

28794838 has 16 divisors (see below), whose sum is σ = 46209744. Its totient is φ = 13409280.

The previous prime is 28794817. The next prime is 28794853. The reversal of 28794838 is 83849782.

It is a junction number, because it is equal to n+sod(n) for n = 28794791 and 28794800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1068 + ... + 7663.

It is an arithmetic number, because the mean of its divisors is an integer number (2888109).

Almost surely, 228794838 is an apocalyptic number.

28794838 is a deficient number, since it is larger than the sum of its proper divisors (17414906).

28794838 is a wasteful number, since it uses less digits than its factorization.

28794838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8847.

The product of its digits is 774144, while the sum is 49.

The square root of 28794838 is about 5366.0821834929. The cubic root of 28794838 is about 306.5054584868.

The spelling of 28794838 in words is "twenty-eight million, seven hundred ninety-four thousand, eight hundred thirty-eight".

Divisors: 1 2 17 34 97 194 1649 3298 8731 17462 148427 296854 846907 1693814 14397419 28794838