19929020 has 24 divisors (see below), whose sum is σ = 42562800. Its totient is φ = 7836032.

The previous prime is 19928999. The next prime is 19929031. The reversal of 19929020 is 2092991.

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, 7265 + ... + 9624.

It is an arithmetic number, because the mean of its divisors is an integer number (1773450).

Almost surely, 2^19929020 is an apocalyptic number.

19929020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19929020 is an abundant number, since it is smaller than the sum of its proper divisors (22633780).

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

19929020 is a wasteful number, since it uses less digits than its factorization.

19929020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16957 (or 16955 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 19929020 is about 4464.1930961821. The cubic root of 19929020 is about 271.1202654249.

The spelling of 19929020 in words is "nineteen million, nine hundred twenty-nine thousand, twenty".