34890390 has 48 divisors (see below), whose sum is σ = 91400400. Its totient is φ = 9233856.

The previous prime is 34890367. The next prime is 34890391. The reversal of 34890390 is 9309843.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34890391) 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, 11116 + ... + 13904.

It is an arithmetic number, because the mean of its divisors is an integer number (1904175).

Almost surely, 2^34890390 is an apocalyptic number.

34890390 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 34890390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45700200).

34890390 is an abundant number, since it is smaller than the sum of its proper divisors (56510010).

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

34890390 is a wasteful number, since it uses less digits than its factorization.

34890390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2941 (or 2938 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 34890390 is about 5906.8087830909. The cubic root of 34890390 is about 326.7648057674.

The spelling of 34890390 in words is "thirty-four million, eight hundred ninety thousand, three hundred ninety".