20369232 has 180 divisors, whose sum is σ = 66079104. Its totient is φ = 6065280.

The previous prime is 20369231. The next prime is 20369233. The reversal of 20369232 is 23296302.

It is an interprime number because it is at equal distance from previous prime (20369231) and next prime (20369233).

It is a super-2 number, since 2×20369232² = 829811224539648, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 20369196 and 20369205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20369231) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 657057 + ... + 657087.

Almost surely, 2^20369232 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 20369232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33039552).

20369232 is an abundant number, since it is smaller than the sum of its proper divisors (45709872).

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

20369232 is a wasteful number, since it uses less digits than its factorization.

20369232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 49 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 20369232 is about 4513.2285561447. The cubic root of 20369232 is about 273.1020026997.

The spelling of 20369232 in words is "twenty million, three hundred sixty-nine thousand, two hundred thirty-two".