20690052 has 48 divisors (see below), whose sum is σ = 50014272. Its totient is φ = 6652800.

The previous prime is 20690029. The next prime is 20690057. The reversal of 20690052 is 25009602.

It is not an unprimeable number, because it can be changed into a prime (20690057) 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, 51918 + ... + 52314.

It is an arithmetic number, because the mean of its divisors is an integer number (1041964).

Almost surely, 2^20690052 is an apocalyptic number.

It is an amenable number.

20690052 is an abundant number, since it is smaller than the sum of its proper divisors (29324220).

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

20690052 is a wasteful number, since it uses less digits than its factorization.

20690052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548 (or 546 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 20690052 is about 4548.6318822257. The cubic root of 20690052 is about 274.5283463483.

Adding to 20690052 its reverse (25009602), we get a palindrome (45699654).

The spelling of 20690052 in words is "twenty million, six hundred ninety thousand, fifty-two".