20695008 has 24 divisors (see below), whose sum is σ = 54324648. Its totient is φ = 6898304.

The previous prime is 20694983. The next prime is 20695021. The reversal of 20695008 is 80059602.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×20695008² = 856566712240128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107691 + ... + 107882.

It is an arithmetic number, because the mean of its divisors is an integer number (2263527).

Almost surely, 2^20695008 is an apocalyptic number.

It is an amenable number.

20695008 is an abundant number, since it is smaller than the sum of its proper divisors (33629640).

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

20695008 is a wasteful number, since it uses less digits than its factorization.

20695008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215586 (or 215578 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 20695008 is about 4549.1766287978. The cubic root of 20695008 is about 274.5502643512.

The spelling of 20695008 in words is "twenty million, six hundred ninety-five thousand, eight".