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28622982 = 2331153887
BaseRepresentation
bin110110100110…
…0000010000110
31222212012100110
41231030002012
524311413412
62501253450
7465201633
oct155140206
958765313
1028622982
111517a963
129704286
135c1229b
143b3118a
1527a5d3c
hex1b4c086

28622982 has 16 divisors (see below), whose sum is σ = 59092992. Its totient is φ = 9233160.

The previous prime is 28622981. The next prime is 28622983. The reversal of 28622982 is 28922682.

It is an interprime number because it is at equal distance from previous prime (28622981) and next prime (28622983).

It is a self number, because there is not a number n which added to its sum of digits gives 28622982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28622981) 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, 76758 + ... + 77129.

It is an arithmetic number, because the mean of its divisors is an integer number (3693312).

Almost surely, 228622982 is an apocalyptic number.

28622982 is an abundant number, since it is smaller than the sum of its proper divisors (30470010).

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

28622982 is a wasteful number, since it uses less digits than its factorization.

28622982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153923.

The product of its digits is 55296, while the sum is 39.

The square root of 28622982 is about 5350.0450465393. The cubic root of 28622982 is about 305.8944699966.

The spelling of 28622982 in words is "twenty-eight million, six hundred twenty-two thousand, nine hundred eighty-two".

Divisors: 1 2 3 6 31 62 93 186 153887 307774 461661 923322 4770497 9540994 14311491 28622982