20575868 has 6 divisors (see below), whose sum is σ = 36007776. Its totient is φ = 10287932.

The previous prime is 20575859. The next prime is 20575873. The reversal of 20575868 is 86857502.

It is a super-3 number, since 3×20575868³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2571980 + ... + 2571987.

It is an arithmetic number, because the mean of its divisors is an integer number (6001296).

Almost surely, 2^20575868 is an apocalyptic number.

It is an amenable number.

20575868 is a deficient number, since it is larger than the sum of its proper divisors (15431908).

20575868 is a wasteful number, since it uses less digits than its factorization.

20575868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5143971 (or 5143969 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 20575868 is about 4536.0630507082. The cubic root of 20575868 is about 274.0223932539.

The spelling of 20575868 in words is "twenty million, five hundred seventy-five thousand, eight hundred sixty-eight".