30947022 has 48 divisors (see below), whose sum is σ = 71456112. Its totient is φ = 10031040.

The previous prime is 30947011. The next prime is 30947023. The reversal of 30947022 is 22074903.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30947023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17122 + ... + 18842.

It is an arithmetic number, because the mean of its divisors is an integer number (1488669).

Almost surely, 2^30947022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30947022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35728056).

30947022 is an abundant number, since it is smaller than the sum of its proper divisors (40509090).

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

30947022 is a wasteful number, since it uses less digits than its factorization.

30947022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1775 (or 1763 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 30947022 is about 5563.0047636147. The cubic root of 30947022 is about 313.9590125953.

The spelling of 30947022 in words is "thirty million, nine hundred forty-seven thousand, twenty-two".