30270840 has 64 divisors (see below), whose sum is σ = 91476000. Its totient is φ = 8013312.

The previous prime is 30270827. The next prime is 30270883. The reversal of 30270840 is 4807203.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 30270840.

It is a congruent number.

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, 17034 + ... + 18726.

Almost surely, 2^30270840 is an apocalyptic number.

30270840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30270840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45738000).

30270840 is an abundant number, since it is smaller than the sum of its proper divisors (61205160).

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

30270840 is a wasteful number, since it uses less digits than its factorization.

30270840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1856 (or 1852 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 30270840 is about 5501.8942192667. The cubic root of 30270840 is about 311.6555205231.

The spelling of 30270840 in words is "thirty million, two hundred seventy thousand, eight hundred forty".