30451122 has 48 divisors (see below), whose sum is σ = 71547840. Its totient is φ = 9304416.

The previous prime is 30451121. The next prime is 30451133. The reversal of 30451122 is 22115403.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 30451095 and 30451104.

It is not an unprimeable number, because it can be changed into a prime (30451121) 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, 41523 + ... + 42249.

It is an arithmetic number, because the mean of its divisors is an integer number (1490580).

Almost surely, 2^30451122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30451122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35773920).

30451122 is an abundant number, since it is smaller than the sum of its proper divisors (41096718).

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

30451122 is a wasteful number, since it uses less digits than its factorization.

30451122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927 (or 924 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 30451122 is about 5518.2535280648. The cubic root of 30451122 is about 312.2729982379.

Adding to 30451122 its reverse (22115403), we get a palindrome (52566525).

The spelling of 30451122 in words is "thirty million, four hundred fifty-one thousand, one hundred twenty-two".