82381802 has 8 divisors (see below), whose sum is σ = 124402500. Its totient is φ = 40914304.

The previous prime is 82381763. The next prime is 82381807. The reversal of 82381802 is 20818328.

It can be written as a sum of positive squares in 2 ways, for example, as 73085401 + 9296401 = 8549^2 + 3049^2 .

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

It is a super-2 number, since 2×82381802² = 13573522601534408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82381807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137927 + ... + 138522.

Almost surely, 2^82381802 is an apocalyptic number.

82381802 is a deficient number, since it is larger than the sum of its proper divisors (42020698).

82381802 is a wasteful number, since it uses less digits than its factorization.

82381802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276600.

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 82381802 is about 9076.4421443647. The cubic root of 82381802 is about 435.1213859508.

The spelling of 82381802 in words is "eighty-two million, three hundred eighty-one thousand, eight hundred two".