20602040460 has 48 divisors (see below), whose sum is σ = 59027248896. Its totient is φ = 5366112192.

The previous prime is 20602040449. The next prime is 20602040467. The reversal of 20602040460 is 6404020602.

It is a super-2 number, since 2×20602040460² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20602040460.

It is not an unprimeable number, because it can be changed into a prime (20602040467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3990064 + ... + 3995223.

It is an arithmetic number, because the mean of its divisors is an integer number (1229734352).

Almost surely, 2^20602040460 is an apocalyptic number.

20602040460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20602040460 is an abundant number, since it is smaller than the sum of its proper divisors (38425208436).

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

20602040460 is a wasteful number, since it uses less digits than its factorization.

20602040460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7985342 (or 7985340 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The spelling of 20602040460 in words is "twenty billion, six hundred two million, forty thousand, four hundred sixty".