30849888 has 48 divisors (see below), whose sum is σ = 81418176. Its totient is φ = 10227840.

The previous prime is 30849887. The next prime is 30849913. The reversal of 30849888 is 88894803.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×30849888² = 1903431179225088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30849887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19495 + ... + 21017.

It is an arithmetic number, because the mean of its divisors is an integer number (1696212).

Almost surely, 2^30849888 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 30849888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40709088).

30849888 is an abundant number, since it is smaller than the sum of its proper divisors (50568288).

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

30849888 is a wasteful number, since it uses less digits than its factorization.

30849888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1747 (or 1739 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 48.

The square root of 30849888 is about 5554.2675484712. The cubic root of 30849888 is about 313.6301919772.

The spelling of 30849888 in words is "thirty million, eight hundred forty-nine thousand, eight hundred eighty-eight".