82801749 has 16 divisors (see below), whose sum is σ = 112412160. Its totient is φ = 54201840.

The previous prime is 82801739. The next prime is 82801769. The reversal of 82801749 is 94710828.

It is a de Polignac number, because none of the positive numbers 2^k-82801749 is a prime.

It is a super-2 number, since 2×82801749² = 13712259274918002, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82801729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98272 + ... + 99110.

It is an arithmetic number, because the mean of its divisors is an integer number (7025760).

Almost surely, 2^82801749 is an apocalyptic number.

It is an amenable number.

82801749 is a deficient number, since it is larger than the sum of its proper divisors (29610411).

82801749 is a wasteful number, since it uses less digits than its factorization.

82801749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1400.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 82801749 is about 9099.5466370584. The cubic root of 82801749 is about 435.8594870974.

The spelling of 82801749 in words is "eighty-two million, eight hundred one thousand, seven hundred forty-nine".