30801738 has 64 divisors (see below), whose sum is σ = 71165952. Its totient is φ = 8796480.

The previous prime is 30801737. The next prime is 30801763. The reversal of 30801738 is 83710803.

It is not an unprimeable number, because it can be changed into a prime (30801733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 156256 + ... + 156452.

It is an arithmetic number, because the mean of its divisors is an integer number (1111968).

Almost surely, 2^30801738 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30801738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35582976).

30801738 is an abundant number, since it is smaller than the sum of its proper divisors (40364214).

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

30801738 is a wasteful number, since it uses less digits than its factorization.

30801738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 30801738 is about 5549.9313509268. The cubic root of 30801738 is about 313.4669373902.

The spelling of 30801738 in words is "thirty million, eight hundred one thousand, seven hundred thirty-eight".