30554442 has 64 divisors (see below), whose sum is σ = 72034560. Its totient is φ = 9580032.

The previous prime is 30554441. The next prime is 30554497. The reversal of 30554442 is 24445503.

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 (30554441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90498 + ... + 90834.

It is an arithmetic number, because the mean of its divisors is an integer number (1125540).

Almost surely, 2^30554442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30554442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36017280).

30554442 is an abundant number, since it is smaller than the sum of its proper divisors (41480118).

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

30554442 is a wasteful number, since it uses less digits than its factorization.

30554442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 30554442 is about 5527.6072581181. The cubic root of 30554442 is about 312.6257780622.

Adding to 30554442 its reverse (24445503), we get a palindrome (54999945).

The spelling of 30554442 in words is "thirty million, five hundred fifty-four thousand, four hundred forty-two".