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28010941 = 723173981
BaseRepresentation
bin110101011011…
…0100110111101
31221201002210021
41222312212331
524132322231
62440212141
7460042360
oct152664675
957632707
1028010941
11148a2042
12946a051
135a5982a
143a120d7
1526d4811
hex1ab69bd

28010941 has 8 divisors (see below), whose sum is σ = 33404544. Its totient is φ = 22965360.

The previous prime is 28010909. The next prime is 28010947. The reversal of 28010941 is 14901082.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28010941 - 25 = 28010909 is a prime.

It is a super-2 number, since 2×280109412 = 1569225631410962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28010947) 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, 86830 + ... + 87151.

It is an arithmetic number, because the mean of its divisors is an integer number (4175568).

Almost surely, 228010941 is an apocalyptic number.

It is an amenable number.

28010941 is a deficient number, since it is larger than the sum of its proper divisors (5393603).

28010941 is a wasteful number, since it uses less digits than its factorization.

28010941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174011.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 28010941 is about 5292.5363484817. The cubic root of 28010941 is about 303.6984436085.

The spelling of 28010941 in words is "twenty-eight million, ten thousand, nine hundred forty-one".

Divisors: 1 7 23 161 173981 1217867 4001563 28010941