20466156 has 48 divisors (see below), whose sum is σ = 49150080. Its totient is φ = 6625920.

The previous prime is 20466139. The next prime is 20466179. The reversal of 20466156 is 65166402.

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, 96891 + ... + 97101.

It is an arithmetic number, because the mean of its divisors is an integer number (1023960).

Almost surely, 2^20466156 is an apocalyptic number.

It is an amenable number.

20466156 is an abundant number, since it is smaller than the sum of its proper divisors (28683924).

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

20466156 is a wasteful number, since it uses less digits than its factorization.

20466156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414 (or 412 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 20466156 is about 4523.9535806637. The cubic root of 20466156 is about 273.5344893768.

The spelling of 20466156 in words is "twenty million, four hundred sixty-six thousand, one hundred fifty-six".