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28802693 = 232714621
BaseRepresentation
bin110110111011…
…1111010000101
32000012022212102
41231313322011
524333141233
62505201445
7466550603
oct155677205
960168772
1028802693
1115292987
129790285
135c7601a
143b7a873
1527de1e8
hex1b77e85

28802693 has 8 divisors (see below), whose sum is σ = 30172416. Its totient is φ = 27442800.

The previous prime is 28802677. The next prime is 28802699. The reversal of 28802693 is 39620882.

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 28802693 - 24 = 28802677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28802699) 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, 3923 + ... + 8543.

It is an arithmetic number, because the mean of its divisors is an integer number (3771552).

Almost surely, 228802693 is an apocalyptic number.

28802693 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

28802693 is a deficient number, since it is larger than the sum of its proper divisors (1369723).

28802693 is a wasteful number, since it uses less digits than its factorization.

28802693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4915.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 28802693 is about 5366.8140455954. The cubic root of 28802693 is about 306.5333266935.

The spelling of 28802693 in words is "twenty-eight million, eight hundred two thousand, six hundred ninety-three".

Divisors: 1 23 271 4621 6233 106283 1252291 28802693