20761058 has 4 divisors (see below), whose sum is σ = 31141590. Its totient is φ = 10380528.

The previous prime is 20761057. The next prime is 20761067. The reversal of 20761058 is 85016702.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20675209 + 85849 = 4547^2 + 293^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20761058.

It is not an unprimeable number, because it can be changed into a prime (20761057) 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 as a sum of consecutive naturals, namely, 5190263 + ... + 5190266.

Almost surely, 2^20761058 is an apocalyptic number.

20761058 is a deficient number, since it is larger than the sum of its proper divisors (10380532).

20761058 is a wasteful number, since it uses less digits than its factorization.

20761058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10380531.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 20761058 is about 4556.4304010925. The cubic root of 20761058 is about 274.8420382087.

The spelling of 20761058 in words is "twenty million, seven hundred sixty-one thousand, fifty-eight".