20429344 has 24 divisors (see below), whose sum is σ = 43315020. Its totient is φ = 9428736.

The previous prime is 20429333. The next prime is 20429363. The reversal of 20429344 is 44392402.

It can be written as a sum of positive squares in 2 ways, for example, as 17539344 + 2890000 = 4188^2 + 1700^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24139 + ... + 24970.

Almost surely, 2^20429344 is an apocalyptic number.

It is an amenable number.

20429344 is an abundant number, since it is smaller than the sum of its proper divisors (22885676).

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

20429344 is a wasteful number, since it uses less digits than its factorization.

20429344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49132 (or 49124 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 20429344 is about 4519.8831843312. The cubic root of 20429344 is about 273.3703909040.

The spelling of 20429344 in words is "twenty million, four hundred twenty-nine thousand, three hundred forty-four".