20134280 has 32 divisors (see below), whose sum is σ = 46410840. Its totient is φ = 7856640.

The previous prime is 20134241. The next prime is 20134291. The reversal of 20134280 is 8243102.

It can be written as a sum of positive squares in 4 ways, for example, as 6041764 + 14092516 = 2458^2 + 3754^2 .

It is a super-2 number, since 2×20134280² = 810778462236800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (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 7 ways as a sum of consecutive naturals, for example, 4499 + ... + 7778.

Almost surely, 2^20134280 is an apocalyptic number.

20134280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20134280 is an abundant number, since it is smaller than the sum of its proper divisors (26276560).

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

20134280 is a wasteful number, since it uses less digits than its factorization.

20134280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12329 (or 12325 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 20134280 is about 4487.1238003871. The cubic root of 20134280 is about 272.0478938155.

Adding to 20134280 its reverse (8243102), we get a palindrome (28377382).

The spelling of 20134280 in words is "twenty million, one hundred thirty-four thousand, two hundred eighty".