30747380 has 12 divisors (see below), whose sum is σ = 64569540. Its totient is φ = 12298944.

The previous prime is 30747307. The next prime is 30747383. The reversal of 30747380 is 8374703.

It can be written as a sum of positive squares in 2 ways, for example, as 16337764 + 14409616 = 4042^2 + 3796^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30747383) 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, 768665 + ... + 768704.

It is an arithmetic number, because the mean of its divisors is an integer number (5380795).

Almost surely, 2^30747380 is an apocalyptic number.

It is an amenable number.

30747380 is an abundant number, since it is smaller than the sum of its proper divisors (33822160).

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

30747380 is a wasteful number, since it uses less digits than its factorization.

30747380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537378 (or 1537376 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 30747380 is about 5545.0320107282. The cubic root of 30747380 is about 313.2824297369.

The spelling of 30747380 in words is "thirty million, seven hundred forty-seven thousand, three hundred eighty".