28404981541 has 8 divisors (see below), whose sum is σ = 28706467104. Its totient is φ = 28103893200.

The previous prime is 28404981503. The next prime is 28404981587. The reversal of 28404981541 is 14518940482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28404981541 - 2¹⁵ = 28404948773 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28404981491 and 28404981500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28404901541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45586 + ... + 242668.

It is an arithmetic number, because the mean of its divisors is an integer number (3588308388).

Almost surely, 2^28404981541 is an apocalyptic number.

It is an amenable number.

28404981541 is a deficient number, since it is larger than the sum of its proper divisors (301485563).

28404981541 is a wasteful number, since it uses less digits than its factorization.

28404981541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198611.

The product of its (nonzero) digits is 368640, while the sum is 46.

The spelling of 28404981541 in words is "twenty-eight billion, four hundred four million, nine hundred eighty-one thousand, five hundred forty-one".