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28711676 = 2271025417
BaseRepresentation
bin110110110000…
…1101011111100
32000000201000102
41231201223330
524322233201
62503220232
7466021340
oct155415374
960021012
1028711676
1115230564
129747678
135c43776
143b55620
1527c226b
hex1b61afc

28711676 has 12 divisors (see below), whose sum is σ = 57423408. Its totient is φ = 12304992.

The previous prime is 28711651. The next prime is 28711687. The reversal of 28711676 is 67611782.

28711676 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 512681 + ... + 512736.

It is an arithmetic number, because the mean of its divisors is an integer number (4785284).

Almost surely, 228711676 is an apocalyptic number.

It is an amenable number.

28711676 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.

28711676 is a wasteful number, since it uses less digits than its factorization.

28711676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025428 (or 1025426 counting only the distinct ones).

The product of its digits is 28224, while the sum is 38.

The square root of 28711676 is about 5358.3277242065. The cubic root of 28711676 is about 306.2101024798.

The spelling of 28711676 in words is "twenty-eight million, seven hundred eleven thousand, six hundred seventy-six".

Divisors: 1 2 4 7 14 28 1025417 2050834 4101668 7177919 14355838 28711676