30777894 has 96 divisors (see below), whose sum is σ = 80720640. Its totient is φ = 8608032.

The previous prime is 30777893. The next prime is 30777907. The reversal of 30777894 is 49877703.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30777893) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 282312 + ... + 282420.

It is an arithmetic number, because the mean of its divisors is an integer number (840840).

Almost surely, 2^30777894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30777894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40360320).

30777894 is an abundant number, since it is smaller than the sum of its proper divisors (49942746).

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

30777894 is a wasteful number, since it uses less digits than its factorization.

30777894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 45.

The square root of 30777894 is about 5547.7828003627. The cubic root of 30777894 is about 313.3860303200.

It can be divided in two parts, 30 and 777894, that added together give a square (777924 = 882²).

The spelling of 30777894 in words is "thirty million, seven hundred seventy-seven thousand, eight hundred ninety-four".