30826140 has 24 divisors (see below), whose sum is σ = 86313360. Its totient is φ = 8220288.

The previous prime is 30826139. The next prime is 30826157. The reversal of 30826140 is 4162803.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 30826140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256825 + ... + 256944.

It is an arithmetic number, because the mean of its divisors is an integer number (3596390).

Almost surely, 2^30826140 is an apocalyptic number.

30826140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30826140 is an abundant number, since it is smaller than the sum of its proper divisors (55487220).

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

30826140 is a wasteful number, since it uses less digits than its factorization.

30826140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513781 (or 513779 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 30826140 is about 5552.1293212604. The cubic root of 30826140 is about 313.5496946372.

Adding to 30826140 its reverse (4162803), we get a palindrome (34988943).

The spelling of 30826140 in words is "thirty million, eight hundred twenty-six thousand, one hundred forty".