20419700 has 72 divisors (see below), whose sum is σ = 52329984. Its totient is φ = 6768000.

The previous prime is 20419697. The next prime is 20419717. The reversal of 20419700 is 791402.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 21230 + ... + 22170.

Almost surely, 2^20419700 is an apocalyptic number.

20419700 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 20419700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26164992).

20419700 is an abundant number, since it is smaller than the sum of its proper divisors (31910284).

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

20419700 is a wasteful number, since it uses less digits than its factorization.

20419700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993 (or 986 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 20419700 is about 4518.8162166656. The cubic root of 20419700 is about 273.3273678386.

The spelling of 20419700 in words is "twenty million, four hundred nineteen thousand, seven hundred".