2732420728 has 32 divisors (see below), whose sum is σ = 5256362160. Its totient is φ = 1330827520.

The previous prime is 2732420711. The next prime is 2732420731. The reversal of 2732420728 is 8270242372.

It is a happy number.

It is a super-2 number, since 2×2732420728² = 14932246069608099968, which 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, 217926 + ... + 230122.

Almost surely, 2^2732420728 is an apocalyptic number.

It is an amenable number.

2732420728 is a deficient number, since it is larger than the sum of its proper divisors (2523941432).

2732420728 is a wasteful number, since it uses less digits than its factorization.

2732420728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12927 (or 12923 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 37.

The square root of 2732420728 is about 52272.5619039281. The cubic root of 2732420728 is about 1398.0279595419.

The spelling of 2732420728 in words is "two billion, seven hundred thirty-two million, four hundred twenty thousand, seven hundred twenty-eight".