2730789621 has 48 divisors (see below), whose sum is σ = 4615752960. Its totient is φ = 1523577600.

The previous prime is 2730789619. The next prime is 2730789643. The reversal of 2730789621 is 1269870372.

It is not a de Polignac number, because 2730789621 - 2¹ = 2730789619 is a prime.

It is a super-2 number, since 2×2730789621² = 14914423908322647282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2730789601) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 461560 + ... + 467438.

It is an arithmetic number, because the mean of its divisors is an integer number (96161520).

Almost surely, 2^2730789621 is an apocalyptic number.

2730789621 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2730789621 is a deficient number, since it is larger than the sum of its proper divisors (1884963339).

2730789621 is a wasteful number, since it uses less digits than its factorization.

2730789621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6066 (or 6063 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 2730789621 is about 52256.9576324531. The cubic root of 2730789621 is about 1397.7497218772.

The spelling of 2730789621 in words is "two billion, seven hundred thirty million, seven hundred eighty-nine thousand, six hundred twenty-one".