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28944982 = 21117193401
BaseRepresentation
bin110111001101…
…0101001010110
32000110120001101
41232122221112
524402214412
62512220314
7501012463
oct156325126
960416041
1028944982
111537a880
12983a69a
135cc5a11
143bb666a
15281b457
hex1b9aa56

28944982 has 32 divisors (see below), whose sum is σ = 50536224. Its totient is φ = 12288000.

The previous prime is 28944947. The next prime is 28944983.

28944982 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28944983) 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, 71982 + ... + 72382.

It is an arithmetic number, because the mean of its divisors is an integer number (1579257).

Almost surely, 228944982 is an apocalyptic number.

28944982 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28944982 is a deficient number, since it is larger than the sum of its proper divisors (21591242).

28944982 is a wasteful number, since it uses less digits than its factorization.

28944982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624.

The product of its digits is 331776, while the sum is 46.

The square root of 28944982 is about 5380.0540889474. The cubic root of 28944982 is about 307.0372690805.

The spelling of 28944982 in words is "twenty-eight million, nine hundred forty-four thousand, nine hundred eighty-two".

Divisors: 1 2 11 17 22 34 187 193 374 386 401 802 2123 3281 4246 4411 6562 6817 8822 13634 36091 72182 74987 77393 149974 154786 851323 1315681 1702646 2631362 14472491 28944982