30550440 has 64 divisors (see below), whose sum is σ = 95644800. Its totient is φ = 7791872.

The previous prime is 30550439. The next prime is 30550451. The reversal of 30550440 is 4405503.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2775 + ... + 8294.

It is an arithmetic number, because the mean of its divisors is an integer number (1494450).

Almost surely, 2^30550440 is an apocalyptic number.

30550440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30550440 is an abundant number, since it is smaller than the sum of its proper divisors (65094360).

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

30550440 is a wasteful number, since it uses less digits than its factorization.

30550440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11106 (or 11102 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 30550440 is about 5527.2452451470. The cubic root of 30550440 is about 312.6121282957.

Adding to 30550440 its reverse (4405503), we get a palindrome (34955943).

The spelling of 30550440 in words is "thirty million, five hundred fifty thousand, four hundred forty".