30049440 has 48 divisors (see below), whose sum is σ = 94657248. Its totient is φ = 8013056.

The previous prime is 30049429. The next prime is 30049441. The reversal of 30049440 is 4494003.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 30049440.

It is not an unprimeable number, because it can be changed into a prime (30049441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30822 + ... + 31781.

It is an arithmetic number, because the mean of its divisors is an integer number (1972026).

Almost surely, 2^30049440 is an apocalyptic number.

30049440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30049440 is an abundant number, since it is smaller than the sum of its proper divisors (64607808).

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

30049440 is a wasteful number, since it uses less digits than its factorization.

30049440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62621 (or 62613 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 30049440 is about 5481.7369510038. The cubic root of 30049440 is about 310.8938475541.

The spelling of 30049440 in words is "thirty million, forty-nine thousand, four hundred forty".