30200640 has 112 divisors (see below), whose sum is σ = 96975168. Its totient is φ = 7962624.

The previous prime is 30200627. The next prime is 30200647. The reversal of 30200640 is 4600203.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30200647) 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 15 ways as a sum of consecutive naturals, for example, 156384 + ... + 156576.

Almost surely, 2^30200640 is an apocalyptic number.

30200640 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 30200640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48487584).

30200640 is an abundant number, since it is smaller than the sum of its proper divisors (66774528).

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

30200640 is a wasteful number, since it uses less digits than its factorization.

30200640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376 (or 366 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 30200640 is about 5495.5108952672. The cubic root of 30200640 is about 311.4144177358.

Adding to 30200640 its reverse (4600203), we get a palindrome (34800843).

The spelling of 30200640 in words is "thirty million, two hundred thousand, six hundred forty".