20540958 has 16 divisors (see below), whose sum is σ = 41383440. Its totient is φ = 6796736.

The previous prime is 20540953. The next prime is 20540963. The reversal of 20540958 is 85904502.

It is an interprime number because it is at equal distance from previous prime (20540953) and next prime (20540963).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20540951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11673 + ... + 13316.

It is an arithmetic number, because the mean of its divisors is an integer number (2586465).

Almost surely, 2^20540958 is an apocalyptic number.

20540958 is an abundant number, since it is smaller than the sum of its proper divisors (20842482).

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

20540958 is a wasteful number, since it uses less digits than its factorization.

20540958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25131.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 20540958 is about 4532.2133665572. The cubic root of 20540958 is about 273.8673323679.

The spelling of 20540958 in words is "twenty million, five hundred forty thousand, nine hundred fifty-eight".