20432700 has 108 divisors (see below), whose sum is σ = 65131248. Its totient is φ = 5356800.

The previous prime is 20432683. The next prime is 20432701. The reversal of 20432700 is 723402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20432701) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 65545 + ... + 65855.

Almost surely, 2^20432700 is an apocalyptic number.

20432700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20432700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32565624).

20432700 is an abundant number, since it is smaller than the sum of its proper divisors (44698548).

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

20432700 is a wasteful number, since it uses less digits than its factorization.

20432700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404 (or 394 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 20432700 is about 4520.2544176185. The cubic root of 20432700 is about 273.3853592554.

The spelling of 20432700 in words is "twenty million, four hundred thirty-two thousand, seven hundred".