30802842 has 80 divisors (see below), whose sum is σ = 82380672. Its totient is φ = 8411040.

The previous prime is 30802841. The next prime is 30802847. The reversal of 30802842 is 24820803.

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

It is not an unprimeable number, because it can be changed into a prime (30802841) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 25492 + ... + 26672.

Almost surely, 2^30802842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30802842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41190336).

30802842 is an abundant number, since it is smaller than the sum of its proper divisors (51577830).

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

30802842 is a wasteful number, since it uses less digits than its factorization.

30802842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225 (or 1216 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 30802842 is about 5550.0308107253. The cubic root of 30802842 is about 313.4706824533.

The spelling of 30802842 in words is "thirty million, eight hundred two thousand, eight hundred forty-two".