30199990 has 16 divisors (see below), whose sum is σ = 57557952. Its totient is φ = 11369344.

The previous prime is 30199957. The next prime is 30199997. The reversal of 30199990 is 9999103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30199997) 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 7 ways as a sum of consecutive naturals, for example, 88654 + ... + 88993.

It is an arithmetic number, because the mean of its divisors is an integer number (3597372).

Almost surely, 2^30199990 is an apocalyptic number.

30199990 is a deficient number, since it is larger than the sum of its proper divisors (27357962).

30199990 is a wasteful number, since it uses less digits than its factorization.

30199990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177671.

The product of its (nonzero) digits is 19683, while the sum is 40.

The square root of 30199990 is about 5495.4517557704. The cubic root of 30199990 is about 311.4121835578.

The spelling of 30199990 in words is "thirty million, one hundred ninety-nine thousand, nine hundred ninety".