30040290 has 96 divisors (see below), whose sum is σ = 91518336. Its totient is φ = 6693120.

The previous prime is 30040267. The next prime is 30040363. The reversal of 30040290 is 9204003.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25249 + ... + 26411.

It is an arithmetic number, because the mean of its divisors is an integer number (953316).

Almost surely, 2^30040290 is an apocalyptic number.

30040290 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 30040290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45759168).

30040290 is an abundant number, since it is smaller than the sum of its proper divisors (61478046).

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

30040290 is a wasteful number, since it uses less digits than its factorization.

30040290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224 (or 1221 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 30040290 is about 5480.9022979798. The cubic root of 30040290 is about 310.8622888130.

Adding to 30040290 its reverse (9204003), we get a palindrome (39244293).

The spelling of 30040290 in words is "thirty million, forty thousand, two hundred ninety".