30393894 has 16 divisors (see below), whose sum is σ = 61267968. Its totient is φ = 10051272.

The previous prime is 30393889. The next prime is 30393899. The reversal of 30393894 is 49839303.

It is an interprime number because it is at equal distance from previous prime (30393889) and next prime (30393899).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30393899) 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, 19182 + ... + 20705.

It is an arithmetic number, because the mean of its divisors is an integer number (3829248).

Almost surely, 2^30393894 is an apocalyptic number.

30393894 is an abundant number, since it is smaller than the sum of its proper divisors (30874074).

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

30393894 is a wasteful number, since it uses less digits than its factorization.

30393894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40019.

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 30393894 is about 5513.0657532810. The cubic root of 30393894 is about 312.0772532237.

The spelling of 30393894 in words is "thirty million, three hundred ninety-three thousand, eight hundred ninety-four".