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28695942 = 23211373917
BaseRepresentation
bin110110101110…
…1110110000110
31222222220102200
41231131312012
524321232232
62503015330
7465624432
oct155356606
958886380
1028695942
111521a760
12973a546
135c39562
143b4d9c2
1527bc77c
hex1b5dd86

28695942 has 48 divisors (see below), whose sum is σ = 69677712. Its totient is φ = 8458560.

The previous prime is 28695929. The next prime is 28695959. The reversal of 28695942 is 24959682.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5368 + ... + 9284.

It is an arithmetic number, because the mean of its divisors is an integer number (1451619).

Almost surely, 228695942 is an apocalyptic number.

28695942 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 28695942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34838856).

28695942 is an abundant number, since it is smaller than the sum of its proper divisors (40981770).

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

28695942 is a wasteful number, since it uses less digits than its factorization.

28695942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3973 (or 3970 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 28695942 is about 5356.8593410692. The cubic root of 28695942 is about 306.1541578751.

The spelling of 28695942 in words is "twenty-eight million, six hundred ninety-five thousand, nine hundred forty-two".

Divisors: 1 2 3 6 9 11 18 22 33 37 66 74 99 111 198 222 333 407 666 814 1221 2442 3663 3917 7326 7834 11751 23502 35253 43087 70506 86174 129261 144929 258522 289858 387783 434787 775566 869574 1304361 1594219 2608722 3188438 4782657 9565314 14347971 28695942