34581990 has 16 divisors (see below), whose sum is σ = 82996848. Its totient is φ = 9221856.

The previous prime is 34581979. The next prime is 34581991. The reversal of 34581990 is 9918543.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34581991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 576337 + ... + 576396.

It is an arithmetic number, because the mean of its divisors is an integer number (5187303).

Almost surely, 2^34581990 is an apocalyptic number.

34581990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

34581990 is an abundant number, since it is smaller than the sum of its proper divisors (48414858).

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

34581990 is a wasteful number, since it uses less digits than its factorization.

34581990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1152743.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 34581990 is about 5880.6453727461. The cubic root of 34581990 is about 325.7991850422.

The spelling of 34581990 in words is "thirty-four million, five hundred eighty-one thousand, nine hundred ninety".