30161340 has 72 divisors (see below), whose sum is σ = 99813168. Its totient is φ = 7311360.

The previous prime is 30161333. The next prime is 30161353. The reversal of 30161340 is 4316103.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5637 + ... + 9596.

It is an arithmetic number, because the mean of its divisors is an integer number (1386294).

Almost surely, 2^30161340 is an apocalyptic number.

30161340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30161340 is an abundant number, since it is smaller than the sum of its proper divisors (69651828).

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

30161340 is a wasteful number, since it uses less digits than its factorization.

30161340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15259 (or 15254 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 30161340 is about 5491.9340855476. The cubic root of 30161340 is about 311.2792782251.

Adding to 30161340 its reverse (4316103), we get a palindrome (34477443).

It can be divided in two parts, 3016 and 1340, that added together give a square (4356 = 66²).

The spelling of 30161340 in words is "thirty million, one hundred sixty-one thousand, three hundred forty".