30199445 has 16 divisors (see below), whose sum is σ = 37134720. Its totient is φ = 23569344.

The previous prime is 30199441. The next prime is 30199451. The reversal of 30199445 is 54499103.

It is a cyclic number.

It is not a de Polignac number, because 30199445 - 2² = 30199441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30199441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48959 + ... + 49571.

It is an arithmetic number, because the mean of its divisors is an integer number (2320920).

Almost surely, 2^30199445 is an apocalyptic number.

It is an amenable number.

30199445 is a deficient number, since it is larger than the sum of its proper divisors (6935275).

30199445 is a wasteful number, since it uses less digits than its factorization.

30199445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 30199445 is about 5495.4021690864. The cubic root of 30199445 is about 311.4103102607.

The spelling of 30199445 in words is "thirty million, one hundred ninety-nine thousand, four hundred forty-five".