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28711096 = 23171071973
BaseRepresentation
bin110110110000…
…1100010111000
32000000200012221
41231201202320
524322223341
62503213424
7466016551
oct155414270
960020187
1028711096
1115230087
129747274
135c4341b
143b55328
1527c1ed1
hex1b618b8

28711096 has 32 divisors (see below), whose sum is σ = 57561840. Its totient is φ = 13378048.

The previous prime is 28711087. The next prime is 28711097. The reversal of 28711096 is 69011782.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28711097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13566 + ... + 15538.

Almost surely, 228711096 is an apocalyptic number.

It is an amenable number.

28711096 is an abundant number, since it is smaller than the sum of its proper divisors (28850744).

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

28711096 is a wasteful number, since it uses less digits than its factorization.

28711096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2103 (or 2099 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 28711096 is about 5358.2736025701. The cubic root of 28711096 is about 306.2080405654.

The spelling of 28711096 in words is "twenty-eight million, seven hundred eleven thousand, ninety-six".

Divisors: 1 2 4 8 17 34 68 107 136 214 428 856 1819 1973 3638 3946 7276 7892 14552 15784 33541 67082 134164 211111 268328 422222 844444 1688888 3588887 7177774 14355548 28711096