20348272 has 40 divisors (see below), whose sum is σ = 45545696. Its totient is φ = 8626176.

The previous prime is 20348257. The next prime is 20348281. The reversal of 20348272 is 27284302.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 20348272.

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, 9928 + ... + 11800.

Almost surely, 2^20348272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20348272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22772848).

20348272 is an abundant number, since it is smaller than the sum of its proper divisors (25197424).

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

20348272 is a wasteful number, since it uses less digits than its factorization.

20348272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1985 (or 1979 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 20348272 is about 4510.9058957154. The cubic root of 20348272 is about 273.0082962946.

The spelling of 20348272 in words is "twenty million, three hundred forty-eight thousand, two hundred seventy-two".