20719230 has 32 divisors (see below), whose sum is σ = 56830464. Its totient is φ = 4735776.

The previous prime is 20719217. The next prime is 20719247. The reversal of 20719230 is 3291702.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20719230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49122 + ... + 49541.

It is an arithmetic number, because the mean of its divisors is an integer number (1775952).

Almost surely, 2^20719230 is an apocalyptic number.

20719230 is an abundant number, since it is smaller than the sum of its proper divisors (36111234).

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

20719230 is a wasteful number, since it uses less digits than its factorization.

20719230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98680.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 20719230 is about 4551.8380902664. The cubic root of 20719230 is about 274.6573362867.

The spelling of 20719230 in words is "twenty million, seven hundred nineteen thousand, two hundred thirty".