20349744 has 40 divisors (see below), whose sum is σ = 52762992. Its totient is φ = 6758400.

The previous prime is 20349743. The next prime is 20349751. The reversal of 20349744 is 44794302.

It is a super-2 number, since 2×20349744² = 828224161731072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20349743) 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, 16344 + ... + 17544.

Almost surely, 2^20349744 is an apocalyptic number.

20349744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20349744 is an abundant number, since it is smaller than the sum of its proper divisors (32413248).

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

20349744 is a wasteful number, since it uses less digits than its factorization.

20349744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1565 (or 1559 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 20349744 is about 4511.0690528964. The cubic root of 20349744 is about 273.0148793028.

The spelling of 20349744 in words is "twenty million, three hundred forty-nine thousand, seven hundred forty-four".