20073430 has 64 divisors (see below), whose sum is σ = 42674688. Its totient is φ = 6727680.

The previous prime is 20073419. The next prime is 20073437. The reversal of 20073430 is 3437002.

It is a junction number, because it is equal to n+sod(n) for n = 20073398 and 20073407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20073437) 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 31 ways as a sum of consecutive naturals, for example, 68364 + ... + 68656.

It is an arithmetic number, because the mean of its divisors is an integer number (666792).

Almost surely, 2^20073430 is an apocalyptic number.

20073430 is an abundant number, since it is smaller than the sum of its proper divisors (22601258).

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

20073430 is a wasteful number, since it uses less digits than its factorization.

20073430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361.

The product of its (nonzero) digits is 504, while the sum is 19.

The square root of 20073430 is about 4480.3381568806. The cubic root of 20073430 is about 271.7735554059.

It can be divided in two parts, 20073 and 430, that added together give a triangular number (20503 = T₂₀₂).

The spelling of 20073430 in words is "twenty million, seventy-three thousand, four hundred thirty".