30742936 has 64 divisors (see below), whose sum is σ = 71470080. Its totient is φ = 12096000.

The previous prime is 30742909. The next prime is 30742961. The reversal of 30742936 is 63924703.

It is a super-2 number, since 2×30742936² = 1890256227800192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

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, 40561 + ... + 41311.

It is an arithmetic number, because the mean of its divisors is an integer number (1116720).

Almost surely, 2^30742936 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 30742936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35735040).

30742936 is an abundant number, since it is smaller than the sum of its proper divisors (40727144).

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

30742936 is a wasteful number, since it uses less digits than its factorization.

30742936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824 (or 820 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 30742936 is about 5544.6312771906. The cubic root of 30742936 is about 313.2673358308.

The spelling of 30742936 in words is "thirty million, seven hundred forty-two thousand, nine hundred thirty-six".