82542890 has 16 divisors (see below), whose sum is σ = 148681440. Its totient is φ = 32994000.

The previous prime is 82542869. The next prime is 82542917. The reversal of 82542890 is 9824528.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23765 + ... + 27015.

It is an arithmetic number, because the mean of its divisors is an integer number (9292590).

Almost surely, 2^82542890 is an apocalyptic number.

82542890 is a deficient number, since it is larger than the sum of its proper divisors (66138550).

82542890 is a wasteful number, since it uses less digits than its factorization.

82542890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5797.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 82542890 is about 9085.3117723059. The cubic root of 82542890 is about 435.4048109936.

The spelling of 82542890 in words is "eighty-two million, five hundred forty-two thousand, eight hundred ninety".