20461370 has 32 divisors (see below), whose sum is σ = 40063248. Its totient is φ = 7492608.

The previous prime is 20461349. The next prime is 20461373. The reversal of 20461370 is 7316402.

It can be written as a sum of positive squares in 8 ways, for example, as 20151121 + 310249 = 4489^2 + 557^2 .

It is not an unprimeable number, because it can be changed into a prime (20461373) 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 15 ways as a sum of consecutive naturals, for example, 4664 + ... + 7916.

Almost surely, 2^20461370 is an apocalyptic number.

20461370 is a deficient number, since it is larger than the sum of its proper divisors (19601878).

20461370 is a wasteful number, since it uses less digits than its factorization.

20461370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3314.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 20461370 is about 4523.4245876327. The cubic root of 20461370 is about 273.5131657482.

Adding to 20461370 its reverse (7316402), we get a palindrome (27777772).

The spelling of 20461370 in words is "twenty million, four hundred sixty-one thousand, three hundred seventy".