30001888 has 48 divisors (see below), whose sum is σ = 68027904. Its totient is φ = 12758400.

The previous prime is 30001877. The next prime is 30001891. The reversal of 30001888 is 88810003.

It is a super-2 number, since 2×30001888² = 1800226567129088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33381 + ... + 34267.

It is an arithmetic number, because the mean of its divisors is an integer number (1417248).

Almost surely, 2^30001888 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 30001888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34013952).

30001888 is an abundant number, since it is smaller than the sum of its proper divisors (38026016).

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

30001888 is a wasteful number, since it uses less digits than its factorization.

30001888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055 (or 1047 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 30001888 is about 5477.3979223715. The cubic root of 30001888 is about 310.7297687420.

The spelling of 30001888 in words is "thirty million, one thousand, eight hundred eighty-eight".