30880290 has 64 divisors (see below), whose sum is σ = 86457600. Its totient is φ = 7056000.

The previous prime is 30880277. The next prime is 30880303. The reversal of 30880290 is 9208803.

It is an interprime number because it is at equal distance from previous prime (30880277) and next prime (30880303).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8790 + ... + 11790.

It is an arithmetic number, because the mean of its divisors is an integer number (1350900).

Almost surely, 2^30880290 is an apocalyptic number.

30880290 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 30880290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43228800).

30880290 is an abundant number, since it is smaller than the sum of its proper divisors (55577310).

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

30880290 is a wasteful number, since it uses less digits than its factorization.

30880290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3032 (or 3018 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 30880290 is about 5557.0036890396. The cubic root of 30880290 is about 313.7331837572.

The spelling of 30880290 in words is "thirty million, eight hundred eighty thousand, two hundred ninety".