20262090 has 32 divisors (see below), whose sum is σ = 48755520. Its totient is φ = 5389184.

The previous prime is 20262089. The next prime is 20262091. The reversal of 20262090 is 9026202.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20262089) and next prime (20262091).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20262091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16477 + ... + 17663.

It is an arithmetic number, because the mean of its divisors is an integer number (1523610).

Almost surely, 2^20262090 is an apocalyptic number.

20262090 is an abundant number, since it is smaller than the sum of its proper divisors (28493430).

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

20262090 is a wasteful number, since it uses less digits than its factorization.

20262090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1766.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 20262090 is about 4501.3431328882. The cubic root of 20262090 is about 272.6223225478.

Adding to 20262090 its reverse (9026202), we get a palindrome (29288292).

The spelling of 20262090 in words is "twenty million, two hundred sixty-two thousand, ninety".