20029976 has 32 divisors (see below), whose sum is σ = 39009600. Its totient is φ = 9634560.

The previous prime is 20029973. The next prime is 20029991. The reversal of 20029976 is 67992002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20029973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25526 + ... + 26298.

It is an arithmetic number, because the mean of its divisors is an integer number (1219050).

Almost surely, 2^20029976 is an apocalyptic number.

It is an amenable number.

20029976 is a deficient number, since it is larger than the sum of its proper divisors (18979624).

20029976 is a wasteful number, since it uses less digits than its factorization.

20029976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899 (or 895 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 20029976 is about 4475.4861188479. The cubic root of 20029976 is about 271.5773062681.

The spelling of 20029976 in words is "twenty million, twenty-nine thousand, nine hundred seventy-six".