30836736 has 144 divisors (see below), whose sum is σ = 102211200. Its totient is φ = 8773632.

The previous prime is 30836713. The next prime is 30836737. The reversal of 30836736 is 63763803.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 30836736.

It is not an unprimeable number, because it can be changed into a prime (30836737) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 128905 + ... + 129143.

It is an arithmetic number, because the mean of its divisors is an integer number (709800).

Almost surely, 2^30836736 is an apocalyptic number.

30836736 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 30836736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51105600).

30836736 is an abundant number, since it is smaller than the sum of its proper divisors (71374464).

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

30836736 is a wasteful number, since it uses less digits than its factorization.

30836736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 30836736 is about 5553.0834677682. The cubic root of 30836736 is about 313.5856164443.

The spelling of 30836736 in words is "thirty million, eight hundred thirty-six thousand, seven hundred thirty-six".