30042782 has 72 divisors (see below), whose sum is σ = 61129080. Its totient is φ = 10936800.

The previous prime is 30042773. The next prime is 30042797. The reversal of 30042782 is 28724003.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 969107 + ... + 969137.

It is an arithmetic number, because the mean of its divisors is an integer number (849015).

Almost surely, 2^30042782 is an apocalyptic number.

30042782 is an abundant number, since it is smaller than the sum of its proper divisors (31086298).

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

30042782 is a wasteful number, since it uses less digits than its factorization.

30042782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 80 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 30042782 is about 5481.1296280967. The cubic root of 30042782 is about 310.8708844624.

Adding to 30042782 its reverse (28724003), we get a palindrome (58766785).

The spelling of 30042782 in words is "thirty million, forty-two thousand, seven hundred eighty-two".