20260420 has 24 divisors (see below), whose sum is σ = 43132824. Its totient is φ = 7992576.

The previous prime is 20260399. The next prime is 20260433. The reversal of 20260420 is 2406202.

It can be written as a sum of positive squares in 4 ways, for example, as 207936 + 20052484 = 456^2 + 4478^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20260394 and 20260403.

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, 5479 + ... + 8398.

It is an arithmetic number, because the mean of its divisors is an integer number (1797201).

Almost surely, 2^20260420 is an apocalyptic number.

20260420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20260420 is an abundant number, since it is smaller than the sum of its proper divisors (22872404).

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

20260420 is a wasteful number, since it uses less digits than its factorization.

20260420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13959 (or 13957 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 20260420 is about 4501.1576288773. The cubic root of 20260420 is about 272.6148325046.

Adding to 20260420 its reverse (2406202), we get a palindrome (22666622).

The spelling of 20260420 in words is "twenty million, two hundred sixty thousand, four hundred twenty".