28141404515 has 32 divisors (see below), whose sum is σ = 38824496640. Its totient is φ = 19181954304.

The previous prime is 28141404503. The next prime is 28141404517. The reversal of 28141404515 is 51540414182.

It is a Cunningham number, because it is equal to 167754²-1.

It is a cyclic number.

It is not a de Polignac number, because 28141404515 - 2⁶ = 28141404451 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (28141404517) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5868959 + ... + 5873751.

It is an arithmetic number, because the mean of its divisors is an integer number (1213265520).

Almost surely, 2^28141404515 is an apocalyptic number.

28141404515 is a deficient number, since it is larger than the sum of its proper divisors (10683092125).

28141404515 is a wasteful number, since it uses less digits than its factorization.

28141404515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5771.

The product of its (nonzero) digits is 25600, while the sum is 35.

Adding to 28141404515 its reverse (51540414182), we get a palindrome (79681818697).

The spelling of 28141404515 in words is "twenty-eight billion, one hundred forty-one million, four hundred four thousand, five hundred fifteen".