30440945 has 8 divisors (see below), whose sum is σ = 38451840. Its totient is φ = 23070960.

The previous prime is 30440939. The next prime is 30440959. The reversal of 30440945 is 54904403.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30440945 - 2⁶ = 30440881 is a prime.

It is a super-2 number, since 2×30440945² = 1853302264986050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160121 + ... + 160310.

It is an arithmetic number, because the mean of its divisors is an integer number (4806480).

Almost surely, 2^30440945 is an apocalyptic number.

It is an amenable number.

30440945 is a deficient number, since it is larger than the sum of its proper divisors (8010895).

30440945 is a wasteful number, since it uses less digits than its factorization.

30440945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320455.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 30440945 is about 5517.3313295469. The cubic root of 30440945 is about 312.2382063463.

The spelling of 30440945 in words is "thirty million, four hundred forty thousand, nine hundred forty-five".