30481893 has 16 divisors (see below), whose sum is σ = 48632640. Its totient is φ = 18757872.

The previous prime is 30481873. The next prime is 30481907. The reversal of 30481893 is 39818403.

It is not a de Polignac number, because 30481893 - 2¹⁴ = 30465509 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30481823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43071 + ... + 43772.

It is an arithmetic number, because the mean of its divisors is an integer number (3039540).

Almost surely, 2^30481893 is an apocalyptic number.

It is an amenable number.

30481893 is a deficient number, since it is larger than the sum of its proper divisors (18150747).

30481893 is a wasteful number, since it uses less digits than its factorization.

30481893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86865 (or 86859 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 30481893 is about 5521.0409344615. The cubic root of 30481893 is about 312.3781472656.

The spelling of 30481893 in words is "thirty million, four hundred eighty-one thousand, eight hundred ninety-three".