82278701 has 4 divisors (see below), whose sum is σ = 82320000. Its totient is φ = 82237404.

The previous prime is 82278689. The next prime is 82278709. The reversal of 82278701 is 10787228.

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 a cyclic number.

It is not a de Polignac number, because 82278701 - 2²² = 78084397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82278709) 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, 17501 + ... + 21698.

It is an arithmetic number, because the mean of its divisors is an integer number (20580000).

Almost surely, 2^82278701 is an apocalyptic number.

It is an amenable number.

82278701 is a deficient number, since it is larger than the sum of its proper divisors (41299).

82278701 is a wasteful number, since it uses less digits than its factorization.

82278701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41298.

The product of its (nonzero) digits is 12544, while the sum is 35.

The square root of 82278701 is about 9070.7607729451. The cubic root of 82278701 is about 434.9397917286.

The spelling of 82278701 in words is "eighty-two million, two hundred seventy-eight thousand, seven hundred one".