30113856 has 140 divisors (see below), whose sum is σ = 92263468. Its totient is φ = 9704448.

The previous prime is 30113849. The next prime is 30113873. The reversal of 30113856 is 65831103.

It can be written as a sum of positive squares in 2 ways, for example, as 18662400 + 11451456 = 4320^2 + 3384^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 191730 + ... + 191886.

Almost surely, 2^30113856 is an apocalyptic number.

30113856 is a gapful number since it is divisible by the number (36) 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 30113856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46131734).

30113856 is an abundant number, since it is smaller than the sum of its proper divisors (62149612).

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

30113856 is a wasteful number, since it uses less digits than its factorization.

30113856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 30113856 is about 5487.6093155399. The cubic root of 30113856 is about 311.1158399886.

Adding to 30113856 its reverse (65831103), we get a palindrome (95944959).

The spelling of 30113856 in words is "thirty million, one hundred thirteen thousand, eight hundred fifty-six".