30239946 has 32 divisors (see below), whose sum is σ = 73310400. Its totient is φ = 9163440.

The previous prime is 30239939. The next prime is 30239947. The reversal of 30239946 is 64993203.

It is a happy number.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30239946.

It is not an unprimeable number, because it can be changed into a prime (30239947) 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, 24861 + ... + 26048.

It is an arithmetic number, because the mean of its divisors is an integer number (2290950).

Almost surely, 2^30239946 is an apocalyptic number.

30239946 is an abundant number, since it is smaller than the sum of its proper divisors (43070454).

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

30239946 is a wasteful number, since it uses less digits than its factorization.

30239946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50931 (or 50925 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The square root of 30239946 is about 5499.0859240423. The cubic root of 30239946 is about 311.5494606647.

The spelling of 30239946 in words is "thirty million, two hundred thirty-nine thousand, nine hundred forty-six".