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82399401 = 3271307927
BaseRepresentation
bin1001110100101…
…01000010101001
312202001022201200
410322111002221
5132043240101
612102034413
72020245330
oct472250251
9182038650
1082399401
114256a987
1223718a09
13140c0556
14ad2cd17
157379986
hex4e950a9

82399401 has 12 divisors (see below), whose sum is σ = 136024512. Its totient is φ = 47085336.

The previous prime is 82399399. The next prime is 82399403. The reversal of 82399401 is 10499328.

It is an interprime number because it is at equal distance from previous prime (82399399) and next prime (82399403).

It is not a de Polignac number, because 82399401 - 21 = 82399399 is a prime.

It is a super-2 number, since 2×823994012 = 13579322570317602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82399403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 653901 + ... + 654026.

It is an arithmetic number, because the mean of its divisors is an integer number (11335376).

Almost surely, 282399401 is an apocalyptic number.

It is an amenable number.

82399401 is a deficient number, since it is larger than the sum of its proper divisors (53625111).

82399401 is a wasteful number, since it uses less digits than its factorization.

82399401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307940 (or 1307937 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 82399401 is about 9077.4115804011. The cubic root of 82399401 is about 435.1523683436.

The spelling of 82399401 in words is "eighty-two million, three hundred ninety-nine thousand, four hundred one".

Divisors: 1 3 7 9 21 63 1307927 3923781 9155489 11771343 27466467 82399401