1080721734 has 32 divisors (see below), whose sum is σ = 2180217600. Its totient is φ = 357121632.

The previous prime is 1080721727. The next prime is 1080721771. The reversal of 1080721734 is 4371270801.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1080721695 and 1080721704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 663429 + ... + 665055.

It is an arithmetic number, because the mean of its divisors is an integer number (68131800).

Almost surely, 2^1080721734 is an apocalyptic number.

1080721734 is an abundant number, since it is smaller than the sum of its proper divisors (1099495866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1080721734 is a wasteful number, since it uses less digits than its factorization.

1080721734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2524.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 1080721734 is about 32874.3324494962. The cubic root of 1080721734 is about 1026.2140629998.

The spelling of 1080721734 in words is "one billion, eighty million, seven hundred twenty-one thousand, seven hundred thirty-four".