30683820 has 48 divisors (see below), whose sum is σ = 87544800. Its totient is φ = 8027136.

The previous prime is 30683813. The next prime is 30683843. The reversal of 30683820 is 2838603.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1645 + ... + 8004.

It is an arithmetic number, because the mean of its divisors is an integer number (1823850).

Almost surely, 2^30683820 is an apocalyptic number.

30683820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30683820 is an abundant number, since it is smaller than the sum of its proper divisors (56860980).

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

30683820 is a wasteful number, since it uses less digits than its factorization.

30683820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9714 (or 9712 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 30683820 is about 5539.2977894314. The cubic root of 30683820 is about 313.0664116821.

The spelling of 30683820 in words is "thirty million, six hundred eighty-three thousand, eight hundred twenty".