20166608 has 40 divisors (see below), whose sum is σ = 48717120. Its totient is φ = 7856640.

The previous prime is 20166583. The next prime is 20166617. The reversal of 20166608 is 80666102.

20166608 = T₂₉₇ + T₂₉₈ + ... + T₅₂₇.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6953 + ... + 9416.

It is an arithmetic number, because the mean of its divisors is an integer number (1217928).

Almost surely, 2^20166608 is an apocalyptic number.

20166608 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20166608 is an abundant number, since it is smaller than the sum of its proper divisors (28550512).

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

20166608 is a wasteful number, since it uses less digits than its factorization.

20166608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16395 (or 16389 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 20166608 is about 4490.7246631251. The cubic root of 20166608 is about 272.1934177923.

The spelling of 20166608 in words is "twenty million, one hundred sixty-six thousand, six hundred eight".