20337930 has 24 divisors (see below), whose sum is σ = 52878852. Its totient is φ = 5423424.

The previous prime is 20337929. The next prime is 20337931. The reversal of 20337930 is 3973302.

It is an interprime number because it is at equal distance from previous prime (20337929) and next prime (20337931).

It can be written as a sum of positive squares in 2 ways, for example, as 20223009 + 114921 = 4497^2 + 339^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20337894 and 20337903.

It is not an unprimeable number, because it can be changed into a prime (20337931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112899 + ... + 113078.

Almost surely, 2^20337930 is an apocalyptic number.

20337930 is an abundant number, since it is smaller than the sum of its proper divisors (32540922).

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

20337930 is a wasteful number, since it uses less digits than its factorization.

20337930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225990 (or 225987 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 27.

The square root of 20337930 is about 4509.7594170865. The cubic root of 20337930 is about 272.9620363424.

The spelling of 20337930 in words is "twenty million, three hundred thirty-seven thousand, nine hundred thirty".