30019140 has 96 divisors (see below), whose sum is σ = 97493760. Its totient is φ = 7653888.

The previous prime is 30019139. The next prime is 30019153. The reversal of 30019140 is 4191003.

It is a super-2 number, since 2×30019140² = 1802297532679200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11212 + ... + 13628.

It is an arithmetic number, because the mean of its divisors is an integer number (1015560).

Almost surely, 2^30019140 is an apocalyptic number.

30019140 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 30019140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48746880).

30019140 is an abundant number, since it is smaller than the sum of its proper divisors (67474620).

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

30019140 is a wasteful number, since it uses less digits than its factorization.

30019140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2458 (or 2450 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 30019140 is about 5478.9725314150. The cubic root of 30019140 is about 310.7893170252.

The spelling of 30019140 in words is "thirty million, nineteen thousand, one hundred forty".