30144870 has 96 divisors (see below), whose sum is σ = 91203840. Its totient is φ = 6765120.

The previous prime is 30144869. The next prime is 30144883. The reversal of 30144870 is 7844103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36765 + ... + 37575.

It is an arithmetic number, because the mean of its divisors is an integer number (950040).

Almost surely, 2^30144870 is an apocalyptic number.

30144870 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 30144870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45601920).

30144870 is an abundant number, since it is smaller than the sum of its proper divisors (61058970).

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

30144870 is a wasteful number, since it uses less digits than its factorization.

30144870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890 (or 887 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 30144870 is about 5490.4344090427. The cubic root of 30144870 is about 311.2226085151. Note that the first 3 decimals are identical.

Adding to 30144870 its reverse (7844103), we get a palindrome (37988973).

The spelling of 30144870 in words is "thirty million, one hundred forty-four thousand, eight hundred seventy".