30944490 has 16 divisors (see below), whose sum is σ = 74266848. Its totient is φ = 8251856.

The previous prime is 30944489. The next prime is 30944491. The reversal of 30944490 is 9444903.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30944489) and next prime (30944491).

It is a super-2 number, since 2×30944490² = 1915122922720200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30944491) 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, 515712 + ... + 515771.

It is an arithmetic number, because the mean of its divisors is an integer number (4641678).

Almost surely, 2^30944490 is an apocalyptic number.

30944490 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30944490 is an abundant number, since it is smaller than the sum of its proper divisors (43322358).

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

30944490 is a wasteful number, since it uses less digits than its factorization.

30944490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031493.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 30944490 is about 5562.7771841051. Note that the first 3 decimals coincide. The cubic root of 30944490 is about 313.9504499416.

The spelling of 30944490 in words is "thirty million, nine hundred forty-four thousand, four hundred ninety".