20280141 has 24 divisors (see below), whose sum is σ = 33597824. Its totient is φ = 11547360.

The previous prime is 20280119. The next prime is 20280149. The reversal of 20280141 is 14108202.

It is not a de Polignac number, because 20280141 - 2⁵ = 20280109 is a prime.

It is a super-2 number, since 2×20280141² = 822568237959762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20280149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30351 + ... + 31011.

Almost surely, 2^20280141 is an apocalyptic number.

20280141 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20280141 is a deficient number, since it is larger than the sum of its proper divisors (13317683).

20280141 is a wasteful number, since it uses less digits than its factorization.

20280141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161 (or 1158 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 20280141 is about 4503.3477547265. The cubic root of 20280141 is about 272.7032560366.

Adding to 20280141 its reverse (14108202), we get a palindrome (34388343).

The spelling of 20280141 in words is "twenty million, two hundred eighty thousand, one hundred forty-one".