30842222 has 4 divisors (see below), whose sum is σ = 46263336. Its totient is φ = 15421110.

The previous prime is 30842221. The next prime is 30842243. The reversal of 30842222 is 22224803.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22224803 = 661 ⋅33623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30842221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7710554 + ... + 7710557.

It is an arithmetic number, because the mean of its divisors is an integer number (11565834).

Almost surely, 2^30842222 is an apocalyptic number.

30842222 is a deficient number, since it is larger than the sum of its proper divisors (15421114).

30842222 is a wasteful number, since it uses less digits than its factorization.

30842222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15421113.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 30842222 is about 5553.5774056008. The cubic root of 30842222 is about 313.6042114590.

The spelling of 30842222 in words is "thirty million, eight hundred forty-two thousand, two hundred twenty-two".