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82902831 = 3112512207
BaseRepresentation
bin1001111000011…
…11111100101111
312202222220022020
410330033330233
5132210342311
612120521223
72024443134
oct474177457
9182886266
1082902831
1142884140
1223920213
131423873b
14b02058b
157428c06
hex4f0ff2f

82902831 has 8 divisors (see below), whose sum is σ = 120585984. Its totient is φ = 50244120.

The previous prime is 82902823. The next prime is 82902881. The reversal of 82902831 is 13820928.

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

It is not a de Polignac number, because 82902831 - 23 = 82902823 is a prime.

It is a super-2 number, since 2×829028312 = 13745758775629122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 2512207 = 82902831 / (8 + 2 + 9 + 0 + 2 + 8 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 82902792 and 82902801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82902881) 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, 1256071 + ... + 1256136.

It is an arithmetic number, because the mean of its divisors is an integer number (15073248).

Almost surely, 282902831 is an apocalyptic number.

82902831 is a deficient number, since it is larger than the sum of its proper divisors (37683153).

82902831 is a wasteful number, since it uses less digits than its factorization.

82902831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2512221.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 82902831 is about 9105.0991757366. The cubic root of 82902831 is about 436.0367765600.

The spelling of 82902831 in words is "eighty-two million, nine hundred two thousand, eight hundred thirty-one".

Divisors: 1 3 11 33 2512207 7536621 27634277 82902831