20319370 has 8 divisors (see below), whose sum is σ = 36574884. Its totient is φ = 8127744.

The previous prime is 20319367. The next prime is 20319371. The reversal of 20319370 is 7391302.

It can be written as a sum of positive squares in 2 ways, for example, as 19740249 + 579121 = 4443^2 + 761^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20319371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1015959 + ... + 1015978.

Almost surely, 2^20319370 is an apocalyptic number.

20319370 is a deficient number, since it is larger than the sum of its proper divisors (16255514).

20319370 is a wasteful number, since it uses less digits than its factorization.

20319370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031944.

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 20319370 is about 4507.7011879671. The cubic root of 20319370 is about 272.8789777867.

The spelling of 20319370 in words is "twenty million, three hundred nineteen thousand, three hundred seventy".