34945890 has 32 divisors (see below), whose sum is σ = 95852160. Its totient is φ = 7987584.

The previous prime is 34945873. The next prime is 34945891. The reversal of 34945890 is 9854943.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (34945891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82995 + ... + 83414.

It is an arithmetic number, because the mean of its divisors is an integer number (2995380).

Almost surely, 2^34945890 is an apocalyptic number.

34945890 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

34945890 is an abundant number, since it is smaller than the sum of its proper divisors (60906270).

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

34945890 is a wasteful number, since it uses less digits than its factorization.

34945890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166426.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 34945890 is about 5911.5048845451. The cubic root of 34945890 is about 326.9379751245.

The spelling of 34945890 in words is "thirty-four million, nine hundred forty-five thousand, eight hundred ninety".