21896304676 has 27 divisors (see below), whose sum is σ = 38603935377. Its totient is φ = 10867210560.

The previous prime is 21896304673. The next prime is 21896304697. The reversal of 21896304676 is 67640369812.

The square root of 21896304676 is 147974.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 16467562276 + 5428742400 = 128326^2 + 73680^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21896304673) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 71323315 + ... + 71323621.

Almost surely, 2^21896304676 is an apocalyptic number.

21896304676 is the 147974-th square number.

It is an amenable number.

21896304676 is a deficient number, since it is larger than the sum of its proper divisors (16707630701).

21896304676 is an frugal number, since it uses more digits than its factorization.

21896304676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100 (or 550 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 21896304676 in words is "twenty-one billion, eight hundred ninety-six million, three hundred four thousand, six hundred seventy-six".