30771740 has 12 divisors (see below), whose sum is σ = 64620696. Its totient is φ = 12308688.

The previous prime is 30771737. The next prime is 30771743. The reversal of 30771740 is 4717703.

It is an interprime number because it is at equal distance from previous prime (30771737) and next prime (30771743).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30771743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 769274 + ... + 769313.

It is an arithmetic number, because the mean of its divisors is an integer number (5385058).

Almost surely, 2^30771740 is an apocalyptic number.

It is an amenable number.

30771740 is an abundant number, since it is smaller than the sum of its proper divisors (33848956).

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

30771740 is a wasteful number, since it uses less digits than its factorization.

30771740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538596 (or 1538594 counting only the distinct ones).

The product of its (nonzero) digits is 4116, while the sum is 29.

The square root of 30771740 is about 5547.2281366463. The cubic root of 30771740 is about 313.3651418842.

The spelling of 30771740 in words is "thirty million, seven hundred seventy-one thousand, seven hundred forty".