2730721432 has 32 divisors (see below), whose sum is σ = 5409374400. Its totient is φ = 1290225664.

The previous prime is 2730721393. The next prime is 2730721451. The reversal of 2730721432 is 2341270372.

It is a junction number, because it is equal to n+sod(n) for n = 2730721394 and 2730721403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114313 + ... + 136120.

It is an arithmetic number, because the mean of its divisors is an integer number (169042950).

Almost surely, 2^2730721432 is an apocalyptic number.

It is an amenable number.

2730721432 is a deficient number, since it is larger than the sum of its proper divisors (2678652968).

2730721432 is a wasteful number, since it uses less digits than its factorization.

2730721432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250515 (or 250511 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 2730721432 is about 52256.3051889435. The cubic root of 2730721432 is about 1397.7380876417.

The spelling of 2730721432 in words is "two billion, seven hundred thirty million, seven hundred twenty-one thousand, four hundred thirty-two".