20490060 has 24 divisors (see below), whose sum is σ = 57372336. Its totient is φ = 5464000.

The previous prime is 20490047. The next prime is 20490077. The reversal of 20490060 is 6009402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170691 + ... + 170810.

It is an arithmetic number, because the mean of its divisors is an integer number (2390514).

Almost surely, 2^20490060 is an apocalyptic number.

20490060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20490060 is an abundant number, since it is smaller than the sum of its proper divisors (36882276).

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

20490060 is a wasteful number, since it uses less digits than its factorization.

20490060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341513 (or 341511 counting only the distinct ones).

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

The square root of 20490060 is about 4526.5947466059. The cubic root of 20490060 is about 273.6409419426.

Adding to 20490060 its reverse (6009402), we get a palindrome (26499462).

The spelling of 20490060 in words is "twenty million, four hundred ninety thousand, sixty".