83284440 has 64 divisors (see below), whose sum is σ = 250560000. Its totient is φ = 22146432.

The previous prime is 83284427. The next prime is 83284457. The reversal of 83284440 is 4448238.

It is a super-2 number, since 2×83284440² = 13872595892227200, which contains 22 as substring.

It is a congruent number.

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, 54811 + ... + 56309.

It is an arithmetic number, because the mean of its divisors is an integer number (3915000).

Almost surely, 2^83284440 is an apocalyptic number.

It is an amenable number.

83284440 is an abundant number, since it is smaller than the sum of its proper divisors (167275560).

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

83284440 is a wasteful number, since it uses less digits than its factorization.

83284440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1976 (or 1972 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 33.

The square root of 83284440 is about 9126.0309006709. The cubic root of 83284440 is about 436.7047911342.

The spelling of 83284440 in words is "eighty-three million, two hundred eighty-four thousand, four hundred forty".