83125890 has 48 divisors (see below), whose sum is σ = 223587000. Its totient is φ = 21401856.

The previous prime is 83125871. The next prime is 83125891. The reversal of 83125890 is 9852138.

It can be written as a sum of positive squares in 4 ways, for example, as 67420521 + 15705369 = 8211^2 + 3963^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83125891) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13315 + ... + 18534.

Almost surely, 2^83125890 is an apocalyptic number.

83125890 is an abundant number, since it is smaller than the sum of its proper divisors (140461110).

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

83125890 is a wasteful number, since it uses less digits than its factorization.

83125890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31891 (or 31888 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 83125890 is about 9117.3400726308. The cubic root of 83125890 is about 436.4274943240.

The spelling of 83125890 in words is "eighty-three million, one hundred twenty-five thousand, eight hundred ninety".