83157890 has 8 divisors (see below), whose sum is σ = 149684220. Its totient is φ = 33263152.

The previous prime is 83157887. The next prime is 83157911. The reversal of 83157890 is 9875138.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 79405921 + 3751969 = 8911^2 + 1937^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4157885 + ... + 4157904.

Almost surely, 2^83157890 is an apocalyptic number.

83157890 is a deficient number, since it is larger than the sum of its proper divisors (66526330).

83157890 is a wasteful number, since it uses less digits than its factorization.

83157890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8315796.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 83157890 is about 9119.0948015688. The cubic root of 83157890 is about 436.4834892659.

The spelling of 83157890 in words is "eighty-three million, one hundred fifty-seven thousand, eight hundred ninety".