20699016 has 32 divisors (see below), whose sum is σ = 55728960. Its totient is φ = 6368832.

The previous prime is 20699009. The next prime is 20699033. The reversal of 20699016 is 61099602.

It is a happy 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, 32860 + ... + 33483.

It is an arithmetic number, because the mean of its divisors is an integer number (1741530).

Almost surely, 2^20699016 is an apocalyptic number.

20699016 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20699016 is an abundant number, since it is smaller than the sum of its proper divisors (35029944).

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

20699016 is a wasteful number, since it uses less digits than its factorization.

20699016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66365 (or 66361 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 20699016 is about 4549.6171267481. The cubic root of 20699016 is about 274.5679872473.

The spelling of 20699016 in words is "twenty million, six hundred ninety-nine thousand, sixteen".