83578442 has 8 divisors (see below), whose sum is σ = 125498916. Its totient is φ = 41745472.

The previous prime is 83578433. The next prime is 83578447. The reversal of 83578442 is 24487538.

It can be written as a sum of positive squares in 2 ways, for example, as 83521321 + 57121 = 9139^2 + 239^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 83578442.

It is not an unprimeable number, because it can be changed into a prime (83578447) 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, 19433 + ... + 23340.

Almost surely, 2^83578442 is an apocalyptic number.

83578442 is a deficient number, since it is larger than the sum of its proper divisors (41920474).

83578442 is a wasteful number, since it uses less digits than its factorization.

83578442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43752.

The product of its digits is 215040, while the sum is 41.

The square root of 83578442 is about 9142.1245889563. The cubic root of 83578442 is about 437.2180574732.

The spelling of 83578442 in words is "eighty-three million, five hundred seventy-eight thousand, four hundred forty-two".