20461650 has 48 divisors (see below), whose sum is σ = 55362528. Its totient is φ = 4960000.

The previous prime is 20461633. The next prime is 20461673. The reversal of 20461650 is 5616402.

It is a self number, because there is not a number n which added to its sum of digits gives 20461650.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4551 + ... + 7850.

It is an arithmetic number, because the mean of its divisors is an integer number (1153386).

Almost surely, 2^20461650 is an apocalyptic number.

20461650 is an abundant number, since it is smaller than the sum of its proper divisors (34900878).

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

20461650 is a wasteful number, since it uses less digits than its factorization.

20461650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12427 (or 12422 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 20461650 is about 4523.4555375288. The cubic root of 20461650 is about 273.5144133567.

The spelling of 20461650 in words is "twenty million, four hundred sixty-one thousand, six hundred fifty".