28774601845 has 8 divisors (see below), whose sum is σ = 37668569760. Its totient is φ = 20926983120.

The previous prime is 28774601839. The next prime is 28774601873. The reversal of 28774601845 is 54810647782.

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

It is not a de Polignac number, because 28774601845 - 2²¹ = 28772504693 is a prime.

It is a super-2 number, since 2×28774601845² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28774601792 and 28774601801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261587235 + ... + 261587344.

It is an arithmetic number, because the mean of its divisors is an integer number (4708571220).

Almost surely, 2^28774601845 is an apocalyptic number.

It is an amenable number.

28774601845 is a deficient number, since it is larger than the sum of its proper divisors (8893967915).

28774601845 is a wasteful number, since it uses less digits than its factorization.

28774601845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523174595.

The product of its (nonzero) digits is 3010560, while the sum is 52.

The spelling of 28774601845 in words is "twenty-eight billion, seven hundred seventy-four million, six hundred one thousand, eight hundred forty-five".