20051470 has 16 divisors (see below), whose sum is σ = 37337760. Its totient is φ = 7743904.

The previous prime is 20051467. The next prime is 20051477. The reversal of 20051470 is 7415002.

It is a super-2 number, since 2×20051470² = 804122898321800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20051477) 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 7 ways as a sum of consecutive naturals, for example, 34282 + ... + 34861.

It is an arithmetic number, because the mean of its divisors is an integer number (2333610).

Almost surely, 2^20051470 is an apocalyptic number.

20051470 is a deficient number, since it is larger than the sum of its proper divisors (17286290).

20051470 is a wasteful number, since it uses less digits than its factorization.

20051470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69179.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 20051470 is about 4477.8867783811. The cubic root of 20051470 is about 271.6744139878.

Adding to 20051470 its reverse (7415002), we get a palindrome (27466472).

The spelling of 20051470 in words is "twenty million, fifty-one thousand, four hundred seventy".