30450000 has 240 divisors, whose sum is σ = 116242560. Its totient is φ = 6720000.

The previous prime is 30449963. The next prime is 30450011. The reversal of 30450000 is 5403.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1049986 + ... + 1050014.

It is an arithmetic number, because the mean of its divisors is an integer number (484344).

Almost surely, 2^30450000 is an apocalyptic number.

30450000 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 30450000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58121280).

30450000 is an abundant number, since it is smaller than the sum of its proper divisors (85792560).

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

30450000 is an equidigital number, since it uses as much as digits as its factorization.

30450000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72 (or 46 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 12.

The square root of 30450000 is about 5518.1518645286. The cubic root of 30450000 is about 312.2691628608.

Adding to 30450000 its reverse (5403), we get a palindrome (30455403).

The spelling of 30450000 in words is "thirty million, four hundred fifty thousand".