30540356 has 48 divisors (see below), whose sum is σ = 67079040. Its totient is φ = 11819520.

The previous prime is 30540337. The next prime is 30540359. The reversal of 30540356 is 65304503.

It is not an unprimeable number, because it can be changed into a prime (30540359) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70316 + ... + 70748.

It is an arithmetic number, because the mean of its divisors is an integer number (1397480).

Almost surely, 2^30540356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30540356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33539520).

30540356 is an abundant number, since it is smaller than the sum of its proper divisors (36538684).

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

30540356 is a wasteful number, since it uses less digits than its factorization.

30540356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684 (or 682 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 30540356 is about 5526.3329613768. The cubic root of 30540356 is about 312.5777291446.

Adding to 30540356 its reverse (65304503), we get a palindrome (95844859).

The spelling of 30540356 in words is "thirty million, five hundred forty thousand, three hundred fifty-six".