19429850 has 24 divisors (see below), whose sum is σ = 39426048. Its totient is φ = 7065200.

The previous prime is 19429843. The next prime is 19429867. The reversal of 19429850 is 5892491.

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 11 ways as a sum of consecutive naturals, for example, 17114 + ... + 18213.

It is an arithmetic number, because the mean of its divisors is an integer number (1642752).

Almost surely, 2^19429850 is an apocalyptic number.

19429850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19429850 is an abundant number, since it is smaller than the sum of its proper divisors (19996198).

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

19429850 is a wasteful number, since it uses less digits than its factorization.

19429850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35350 (or 35345 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 19429850 is about 4407.9303533518. The cubic root of 19429850 is about 268.8374800847.

The spelling of 19429850 in words is "nineteen million, four hundred twenty-nine thousand, eight hundred fifty".