20262145 has 4 divisors (see below), whose sum is σ = 24314580. Its totient is φ = 16209712.

The previous prime is 20262133. The next prime is 20262161. The reversal of 20262145 is 54126202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5424241 + 14837904 = 2329^2 + 3852^2 .

It is a cyclic number.

It is not a de Polignac number, because 20262145 - 2⁷ = 20262017 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2026210 + ... + 2026219.

It is an arithmetic number, because the mean of its divisors is an integer number (6078645).

Almost surely, 2^20262145 is an apocalyptic number.

It is an amenable number.

20262145 is a deficient number, since it is larger than the sum of its proper divisors (4052435).

20262145 is an equidigital number, since it uses as much as digits as its factorization.

20262145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4052434.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 20262145 is about 4501.3492421717. The cubic root of 20262145 is about 272.6225692189.

Adding to 20262145 its reverse (54126202), we get a palindrome (74388347).

The spelling of 20262145 in words is "twenty million, two hundred sixty-two thousand, one hundred forty-five".