30773142 has 48 divisors (see below), whose sum is σ = 70781040. Its totient is φ = 9910080.

The previous prime is 30773129. The next prime is 30773189. The reversal of 30773142 is 24137703.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51598 + ... + 52190.

It is an arithmetic number, because the mean of its divisors is an integer number (1474605).

Almost surely, 2^30773142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30773142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35390520).

30773142 is an abundant number, since it is smaller than the sum of its proper divisors (40007898).

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

30773142 is a wasteful number, since it uses less digits than its factorization.

30773142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666 (or 629 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 30773142 is about 5547.3545046265. The cubic root of 30773142 is about 313.3699009181.

The spelling of 30773142 in words is "thirty million, seven hundred seventy-three thousand, one hundred forty-two".