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28712054 = 274150021
BaseRepresentation
bin110110110000…
…1110001110110
32000000201112102
41231201301312
524322241204
62503222102
7466022420
oct155416166
960021472
1028712054
1115230878
129747932
135c439a7
143b55810
1527c241e
hex1b61c76

28712054 has 16 divisors (see below), whose sum is σ = 50422176. Its totient is φ = 12004800.

The previous prime is 28712053. The next prime is 28712069. The reversal of 28712054 is 45021782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28712051) 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, 24437 + ... + 25584.

It is an arithmetic number, because the mean of its divisors is an integer number (3151386).

Almost surely, 228712054 is an apocalyptic number.

28712054 is a deficient number, since it is larger than the sum of its proper divisors (21710122).

28712054 is a wasteful number, since it uses less digits than its factorization.

28712054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50071.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 28712054 is about 5358.3629962891. The cubic root of 28712054 is about 306.2114462643.

The spelling of 28712054 in words is "twenty-eight million, seven hundred twelve thousand, fifty-four".

Divisors: 1 2 7 14 41 82 287 574 50021 100042 350147 700294 2050861 4101722 14356027 28712054