30545100 has 126 divisors (see below), whose sum is σ = 99616020. Its totient is φ = 8125920.

The previous prime is 30545051. The next prime is 30545101. The reversal of 30545100 is 154503.

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

It is not an unprimeable number, because it can be changed into a prime (30545101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 72691 + ... + 73109.

Almost surely, 2^30545100 is an apocalyptic number.

30545100 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30545100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49808010).

30545100 is an abundant number, since it is smaller than the sum of its proper divisors (69070920).

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

30545100 is a wasteful number, since it uses less digits than its factorization.

30545100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451 (or 429 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 30545100 is about 5526.7621624239. The cubic root of 30545100 is about 312.5939131076.

Adding to 30545100 its reverse (154503), we get a palindrome (30699603).

The spelling of 30545100 in words is "thirty million, five hundred forty-five thousand, one hundred".