30650000 has 60 divisors (see below), whose sum is σ = 74346804. Its totient is φ = 12240000.

The previous prime is 30649981. The next prime is 30650003. The reversal of 30650000 is 5603.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 30514576 + 135424 = 5524^2 + 368^2 .

It is not an unprimeable number, because it can be changed into a prime (30650003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49694 + ... + 50306.

Almost surely, 2^30650000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30650000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37173402).

30650000 is an abundant number, since it is smaller than the sum of its proper divisors (43696804).

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

30650000 is an frugal number, since it uses more digits than its factorization.

30650000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646 (or 620 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 14.

The square root of 30650000 is about 5536.2442142666. The cubic root of 30650000 is about 312.9513477987.

Adding to 30650000 its reverse (5603), we get a palindrome (30655603).

The spelling of 30650000 in words is "thirty million, six hundred fifty thousand".