7828887361 has 9 divisors (see below), whose sum is σ = 8186201121. Its totient is φ = 7486554372.

The previous prime is 7828887317. The next prime is 7828887373. The reversal of 7828887361 is 1637888287.

It is a happy number.

The square root of 7828887361 is 88481.

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

It is a de Polignac number, because none of the positive numbers 2^k-7828887361 is a prime.

It is a super-2 number, since 2×7828887361² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7828887296 and 7828887305.

It is not an unprimeable number, because it can be changed into a prime (7828887061) 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, 2033140 + ... + 2036986.

Almost surely, 2^7828887361 is an apocalyptic number.

7828887361 is the 88481-st square number.

7828887361 is the 44241-st centered octagonal number.

It is an amenable number.

7828887361 is a deficient number, since it is larger than the sum of its proper divisors (357313760).

7828887361 is an frugal number, since it uses more digits than its factorization.

7828887361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7740 (or 3870 counting only the distinct ones).

The product of its digits is 7225344, while the sum is 58.

The cubic root of 7828887361 is about 1985.6377227950.

It can be divided in two parts, 78288 and 87361, that added together give a square (165649 = 407²).

The spelling of 7828887361 in words is "seven billion, eight hundred twenty-eight million, eight hundred eighty-seven thousand, three hundred sixty-one".