82402427 has 4 divisors (see below), whose sum is σ = 85243920. Its totient is φ = 79560936.

The previous prime is 82402423. The next prime is 82402447. The reversal of 82402427 is 72420428.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82402427 - 2² = 82402423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 2841463 = 82402427 / (8 + 2 + 4 + 0 + 2 + 4 + 2 + 7).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82402427.

It is not an unprimeable number, because it can be changed into a prime (82402423) 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, 1420703 + ... + 1420760.

It is an arithmetic number, because the mean of its divisors is an integer number (21310980).

Almost surely, 2^82402427 is an apocalyptic number.

82402427 is a deficient number, since it is larger than the sum of its proper divisors (2841493).

82402427 is a wasteful number, since it uses less digits than its factorization.

82402427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2841492.

The product of its (nonzero) digits is 7168, while the sum is 29.

The square root of 82402427 is about 9077.5782563413. The cubic root of 82402427 is about 435.1576950609.

The spelling of 82402427 in words is "eighty-two million, four hundred two thousand, four hundred twenty-seven".