20930958 has 24 divisors (see below), whose sum is σ = 46121400. Its totient is φ = 6858384.

The previous prime is 20930957. The next prime is 20930969. The reversal of 20930958 is 85903902.

It is a super-3 number, since 3×20930958³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20930957) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8793 + ... + 10916.

It is an arithmetic number, because the mean of its divisors is an integer number (1921725).

Almost surely, 2^20930958 is an apocalyptic number.

20930958 is an abundant number, since it is smaller than the sum of its proper divisors (25190442).

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

20930958 is a wasteful number, since it uses less digits than its factorization.

20930958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19776 (or 19773 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 20930958 is about 4575.0363932979. The cubic root of 20930958 is about 275.5897338685.

The spelling of 20930958 in words is "twenty million, nine hundred thirty thousand, nine hundred fifty-eight".