82726401 has 4 divisors (see below), whose sum is σ = 110301872. Its totient is φ = 55150932.

The previous prime is 82726393. The next prime is 82726421. The reversal of 82726401 is 10462728.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 82726401 - 2³ = 82726393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82726421) 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, 13787731 + ... + 13787736.

It is an arithmetic number, because the mean of its divisors is an integer number (27575468).

Almost surely, 2^82726401 is an apocalyptic number.

It is an amenable number.

82726401 is a deficient number, since it is larger than the sum of its proper divisors (27575471).

82726401 is a wasteful number, since it uses less digits than its factorization.

82726401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27575470.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 82726401 is about 9095.4054884870. The cubic root of 82726401 is about 435.7272390564.

The spelling of 82726401 in words is "eighty-two million, seven hundred twenty-six thousand, four hundred one".