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28885802 = 2111578363
BaseRepresentation
bin110111000110…
…0001100101010
32000100112212112
41232030030222
524343321202
62511042322
7500345111
oct156141452
960315775
1028885802
111533a370
1298103a2
135ca4aba
143b9cc78
152808b52
hex1b8c32a

28885802 has 16 divisors (see below), whose sum is σ = 47574432. Its totient is φ = 13044720.

The previous prime is 28885793. The next prime is 28885807. The reversal of 28885802 is 20858882.

It is a self number, because there is not a number n which added to its sum of digits gives 28885802.

It is not an unprimeable number, because it can be changed into a prime (28885807) 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, 728 + ... + 7635.

It is an arithmetic number, because the mean of its divisors is an integer number (2973402).

Almost surely, 228885802 is an apocalyptic number.

28885802 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28885802 is a deficient number, since it is larger than the sum of its proper divisors (18688630).

28885802 is a wasteful number, since it uses less digits than its factorization.

28885802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8533.

The product of its (nonzero) digits is 81920, while the sum is 41.

The square root of 28885802 is about 5374.5513301112. The cubic root of 28885802 is about 306.8278733925.

The spelling of 28885802 in words is "twenty-eight million, eight hundred eighty-five thousand, eight hundred two".

Divisors: 1 2 11 22 157 314 1727 3454 8363 16726 91993 183986 1312991 2625982 14442901 28885802