28414894976 has 64 divisors (see below), whose sum is σ = 61071418800. Its totient is φ = 13091082240.

The previous prime is 28414894943. The next prime is 28414894993. The reversal of 28414894976 is 67949841482.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×28414894976² (a number of 22 digits) contains 22 as substring.

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, 931811 + ... + 961821.

Almost surely, 2^28414894976 is an apocalyptic number.

28414894976 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28414894976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30535709400).

28414894976 is an abundant number, since it is smaller than the sum of its proper divisors (32656523824).

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

28414894976 is a wasteful number, since it uses less digits than its factorization.

28414894976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30607 (or 30595 counting only the distinct ones).

The product of its digits is 27869184, while the sum is 62.

The spelling of 28414894976 in words is "twenty-eight billion, four hundred fourteen million, eight hundred ninety-four thousand, nine hundred seventy-six".