30771036 has 24 divisors (see below), whose sum is σ = 79777040. Its totient is φ = 10256976.

The previous prime is 30771031. The next prime is 30771047. The reversal of 30771036 is 63017703.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30771031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142351 + ... + 142566.

Almost surely, 2^30771036 is an apocalyptic number.

30771036 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

30771036 is an abundant number, since it is smaller than the sum of its proper divisors (49006004).

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

30771036 is a wasteful number, since it uses less digits than its factorization.

30771036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284930 (or 284922 counting only the distinct ones).

The product of its (nonzero) digits is 2646, while the sum is 27.

The square root of 30771036 is about 5547.1646811682. The cubic root of 30771036 is about 313.3627521294.

Adding to 30771036 its reverse (63017703), we get a palindrome (93788739).

The spelling of 30771036 in words is "thirty million, seven hundred seventy-one thousand, thirty-six".