82280040 has 64 divisors (see below), whose sum is σ = 247484160. Its totient is φ = 21884160.

The previous prime is 82280021. The next prime is 82280053. The reversal of 82280040 is 4008228.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66225 + ... + 67455.

It is an arithmetic number, because the mean of its divisors is an integer number (3866940).

Almost surely, 2^82280040 is an apocalyptic number.

It is an amenable number.

82280040 is an abundant number, since it is smaller than the sum of its proper divisors (165204120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82280040 is a wasteful number, since it uses less digits than its factorization.

82280040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1802 (or 1798 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 82280040 is about 9070.8345812279. The cubic root of 82280040 is about 434.9421511129.

Adding to 82280040 its reverse (4008228), we get a palindrome (86288268).

The spelling of 82280040 in words is "eighty-two million, two hundred eighty thousand, forty".