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28612067 = 1129257349
BaseRepresentation
bin110110100100…
…1010111100011
31222211122101012
41231021113203
524311041232
62501131135
7465125051
oct155112743
958748335
1028612067
1115172740
1296b9aab
135c0a323
143b2b1d1
1527a29b2
hex1b495e3

28612067 has 16 divisors (see below), whose sum is σ = 32508000. Its totient is φ = 24944640.

The previous prime is 28612027. The next prime is 28612079. The reversal of 28612067 is 76021682.

It is not a de Polignac number, because 28612067 - 220 = 27563491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28612007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81809 + ... + 82157.

It is an arithmetic number, because the mean of its divisors is an integer number (2031750).

Almost surely, 228612067 is an apocalyptic number.

28612067 is a deficient number, since it is larger than the sum of its proper divisors (3895933).

28612067 is a wasteful number, since it uses less digits than its factorization.

28612067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 28612067 is about 5349.0248644029. The cubic root of 28612067 is about 305.8555821006.

The spelling of 28612067 in words is "twenty-eight million, six hundred twelve thousand, sixty-seven".

Divisors: 1 11 29 257 319 349 2827 3839 7453 10121 81983 89693 111331 986623 2601097 28612067