20602460420 has 24 divisors (see below), whose sum is σ = 43365104664. Its totient is φ = 8221948416.

The previous prime is 20602460419. The next prime is 20602460423. The reversal of 20602460420 is 2406420602.

It can be written as a sum of positive squares in 4 ways, for example, as 3892761664 + 16709698756 = 62392^2 + 129266^2 .

It is a super-2 number, since 2×20602460420² (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 20602460420.

It is not an unprimeable number, because it can be changed into a prime (20602460423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1180859 + ... + 1198178.

It is an arithmetic number, because the mean of its divisors is an integer number (1806879361).

Almost surely, 2^20602460420 is an apocalyptic number.

20602460420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20602460420 is an abundant number, since it is smaller than the sum of its proper divisors (22762644244).

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

20602460420 is a wasteful number, since it uses less digits than its factorization.

20602460420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2379479 (or 2379477 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The spelling of 20602460420 in words is "twenty billion, six hundred two million, four hundred sixty thousand, four hundred twenty".