30020340 has 72 divisors (see below), whose sum is σ = 97790112. Its totient is φ = 6861120.

The previous prime is 30020329. The next prime is 30020377. The reversal of 30020340 is 4302003.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2166 + ... + 8045.

It is an arithmetic number, because the mean of its divisors is an integer number (1358196).

Almost surely, 2^30020340 is an apocalyptic number.

30020340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30020340 is an abundant number, since it is smaller than the sum of its proper divisors (67769772).

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

30020340 is a wasteful number, since it uses less digits than its factorization.

30020340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10237 (or 10228 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 12.

The square root of 30020340 is about 5479.0820399041. The cubic root of 30020340 is about 310.7934581855.

Adding to 30020340 its reverse (4302003), we get a palindrome (34322343).

The spelling of 30020340 in words is "thirty million, twenty thousand, three hundred forty".