20101692 has 24 divisors (see below), whose sum is σ = 50512336. Its totient is φ = 6185088.

The previous prime is 20101673. The next prime is 20101709. The reversal of 20101692 is 29610102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64273 + ... + 64584.

Almost surely, 2^20101692 is an apocalyptic number.

It is an amenable number.

20101692 is an abundant number, since it is smaller than the sum of its proper divisors (30410644).

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

20101692 is a wasteful number, since it uses less digits than its factorization.

20101692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128877 (or 128875 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 20101692 is about 4483.4910505096. The cubic root of 20101692 is about 271.9010417121.

Adding to 20101692 its reverse (29610102), we get a palindrome (49711794).

The spelling of 20101692 in words is "twenty million, one hundred one thousand, six hundred ninety-two".