20552466 has 32 divisors (see below), whose sum is σ = 45188928. Its totient is φ = 6179840.

The previous prime is 20552449. The next prime is 20552479. The reversal of 20552466 is 66425502.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7906 + ... + 10178.

It is an arithmetic number, because the mean of its divisors is an integer number (1412154).

Almost surely, 2^20552466 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20552466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22594464).

20552466 is an abundant number, since it is smaller than the sum of its proper divisors (24636462).

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

20552466 is a wasteful number, since it uses less digits than its factorization.

20552466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2426.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 20552466 is about 4533.4827671449. The cubic root of 20552466 is about 273.9184672253.

Adding to 20552466 its reverse (66425502), we get a palindrome (86977968).

The spelling of 20552466 in words is "twenty million, five hundred fifty-two thousand, four hundred sixty-six".