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28936962 = 23219211401
BaseRepresentation
bin110111001100…
…0101100000010
32000110011001100
41232120230002
524401440322
62512115230
7500650215
oct156305402
960404040
1028936962
111537484a
129835b16
135cc2182
143bb377c
152818dac
hex1b98b02

28936962 has 48 divisors (see below), whose sum is σ = 66474720. Its totient is φ = 9072000.

The previous prime is 28936951. The next prime is 28936987. The reversal of 28936962 is 26963982.

28936962 is a `hidden beast` number, since 289 + 369 + 6 + 2 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71962 + ... + 72362.

It is an arithmetic number, because the mean of its divisors is an integer number (1384890).

Almost surely, 228936962 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28936962, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33237360).

28936962 is an abundant number, since it is smaller than the sum of its proper divisors (37537758).

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

28936962 is a wasteful number, since it uses less digits than its factorization.

28936962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639 (or 636 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 28936962 is about 5379.3086916443. The cubic root of 28936962 is about 307.0089087662.

The spelling of 28936962 in words is "twenty-eight million, nine hundred thirty-six thousand, nine hundred sixty-two".

Divisors: 1 2 3 6 9 18 19 38 57 114 171 211 342 401 422 633 802 1203 1266 1899 2406 3609 3798 4009 7218 7619 8018 12027 15238 22857 24054 36081 45714 68571 72162 84611 137142 169222 253833 507666 761499 1522998 1607609 3215218 4822827 9645654 14468481 28936962