20270480 has 20 divisors (see below), whose sum is σ = 47129052. Its totient is φ = 8108160.

The previous prime is 20270479. The next prime is 20270513. The reversal of 20270480 is 8407202.

It can be written as a sum of positive squares in 2 ways, for example, as 6012304 + 14258176 = 2452^2 + 3776^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126611 + ... + 126770.

Almost surely, 2^20270480 is an apocalyptic number.

20270480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20270480 is an abundant number, since it is smaller than the sum of its proper divisors (26858572).

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

20270480 is a wasteful number, since it uses less digits than its factorization.

20270480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253394 (or 253388 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 20270480 is about 4502.2749804960. The cubic root of 20270480 is about 272.6599459397.

Adding to 20270480 its reverse (8407202), we get a palindrome (28677682).

The spelling of 20270480 in words is "twenty million, two hundred seventy thousand, four hundred eighty".