30545440 has 24 divisors (see below), whose sum is σ = 72163980. Its totient is φ = 12218112.

The previous prime is 30545419. The next prime is 30545453. The reversal of 30545440 is 4454503.

It can be written as a sum of positive squares in 2 ways, for example, as 29899024 + 646416 = 5468^2 + 804^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95295 + ... + 95614.

Almost surely, 2^30545440 is an apocalyptic number.

It is an amenable number.

30545440 is an abundant number, since it is smaller than the sum of its proper divisors (41618540).

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

30545440 is a wasteful number, since it uses less digits than its factorization.

30545440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190924 (or 190916 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 30545440 is about 5526.7929217585. The cubic root of 30545440 is about 312.5950729394.

Adding to 30545440 its reverse (4454503), we get a palindrome (34999943).

The spelling of 30545440 in words is "thirty million, five hundred forty-five thousand, four hundred forty".