30450138 has 8 divisors (see below), whose sum is σ = 60900288. Its totient is φ = 10150044.

The previous prime is 30450089. The next prime is 30450139. The reversal of 30450138 is 83105403.

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

30450138 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (30450139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2537506 + ... + 2537517.

It is an arithmetic number, because the mean of its divisors is an integer number (7612536).

Almost surely, 2^30450138 is an apocalyptic number.

30450138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

30450138 is a wasteful number, since it uses less digits than its factorization.

30450138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5075028.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 30450138 is about 5518.1643687009. The cubic root of 30450138 is about 312.2696345968.

The spelling of 30450138 in words is "thirty million, four hundred fifty thousand, one hundred thirty-eight".