20069400 has 192 divisors, whose sum is σ = 69995520. Its totient is φ = 4723200.

The previous prime is 20069389. The next prime is 20069417. The reversal of 20069400 is 496002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 241759 + ... + 241841.

It is an arithmetic number, because the mean of its divisors is an integer number (364560).

Almost surely, 2^20069400 is an apocalyptic number.

20069400 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 20069400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34997760).

20069400 is an abundant number, since it is smaller than the sum of its proper divisors (49926120).

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

20069400 is a wasteful number, since it uses less digits than its factorization.

20069400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 20069400 is about 4479.8883914669. Note that the first 3 decimals coincide. The cubic root of 20069400 is about 271.7553668397.

The spelling of 20069400 in words is "twenty million, sixty-nine thousand, four hundred".