30545540 has 48 divisors (see below), whose sum is σ = 69726720. Its totient is φ = 11197440.

The previous prime is 30545507. The next prime is 30545551. The reversal of 30545540 is 4554503.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10484 + ... + 13076.

It is an arithmetic number, because the mean of its divisors is an integer number (1452640).

Almost surely, 2^30545540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30545540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34863360).

30545540 is an abundant number, since it is smaller than the sum of its proper divisors (39181180).

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

30545540 is a wasteful number, since it uses less digits than its factorization.

30545540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2652 (or 2650 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 30545540 is about 5526.8019685891. The cubic root of 30545540 is about 312.5954140647.

The spelling of 30545540 in words is "thirty million, five hundred forty-five thousand, five hundred forty".