30372690 has 16 divisors (see below), whose sum is σ = 72894528. Its totient is φ = 8099376.

The previous prime is 30372689. The next prime is 30372733. The reversal of 30372690 is 9627303.

It is a happy number.

It is a super-2 number, since 2×30372690² = 1845000595672200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 1012423 = 30372690 / (3 + 0 + 3 + 7 + 2 + 6 + 9 + 0).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 506182 + ... + 506241.

It is an arithmetic number, because the mean of its divisors is an integer number (4555908).

Almost surely, 2^30372690 is an apocalyptic number.

30372690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30372690 is an abundant number, since it is smaller than the sum of its proper divisors (42521838).

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

30372690 is a wasteful number, since it uses less digits than its factorization.

30372690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012433.

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 30372690 is about 5511.1423498219. The cubic root of 30372690 is about 312.0046638027.

Adding to 30372690 its reverse (9627303), we get a palindrome (39999993).

The spelling of 30372690 in words is "thirty million, three hundred seventy-two thousand, six hundred ninety".