30072340 has 24 divisors (see below), whose sum is σ = 63273672. Its totient is φ = 12005760.

The previous prime is 30072323. The next prime is 30072349. The reversal of 30072340 is 4327003.

It can be written as a sum of positive squares in 4 ways, for example, as 14485636 + 15586704 = 3806^2 + 3948^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30072349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12430 + ... + 14650.

It is an arithmetic number, because the mean of its divisors is an integer number (2636403).

Almost surely, 2^30072340 is an apocalyptic number.

It is an amenable number.

30072340 is an abundant number, since it is smaller than the sum of its proper divisors (33201332).

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

30072340 is a wasteful number, since it uses less digits than its factorization.

30072340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2907 (or 2905 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 19.

The square root of 30072340 is about 5483.8253072103. The cubic root of 30072340 is about 310.9728025623.

Adding to 30072340 its reverse (4327003), we get a palindrome (34399343).

It can be divided in two parts, 300723 and 40, that added together give a cube (300763 = 67³).

The spelling of 30072340 in words is "thirty million, seventy-two thousand, three hundred forty".