20429676 has 36 divisors (see below), whose sum is σ = 51795744. Its totient is φ = 6789600.

The previous prime is 20429663. The next prime is 20429711. The reversal of 20429676 is 67692402.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×20429676² = 834743322929952, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 20429676.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15981 + ... + 17211.

Almost surely, 2^20429676 is an apocalyptic number.

It is an amenable number.

20429676 is an abundant number, since it is smaller than the sum of its proper divisors (31366068).

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

20429676 is a wasteful number, since it uses less digits than its factorization.

20429676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1702 (or 1697 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 20429676 is about 4519.9199107949. The cubic root of 20429676 is about 273.3718717556.

The spelling of 20429676 in words is "twenty million, four hundred twenty-nine thousand, six hundred seventy-six".