20774330 has 16 divisors (see below), whose sum is σ = 37531944. Its totient is φ = 8279040.

The previous prime is 20774321. The next prime is 20774363. The reversal of 20774330 is 3347702.

It can be written as a sum of positive squares in 4 ways, for example, as 14922769 + 5851561 = 3863^2 + 2419^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20774330.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 887 + ... + 6506.

Almost surely, 2^20774330 is an apocalyptic number.

20774330 is a deficient number, since it is larger than the sum of its proper divisors (16757614).

20774330 is a wasteful number, since it uses less digits than its factorization.

20774330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7681.

The product of its (nonzero) digits is 3528, while the sum is 26.

The square root of 20774330 is about 4557.8865716470. The cubic root of 20774330 is about 274.9005921693.

The spelling of 20774330 in words is "twenty million, seven hundred seventy-four thousand, three hundred thirty".