11728740 has 24 divisors (see below), whose sum is σ = 32840640. Its totient is φ = 3127648.

The previous prime is 11728721. The next prime is 11728751. The reversal of 11728740 is 4782711.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 11728698 and 11728707.

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, 97680 + ... + 97799.

It is an arithmetic number, because the mean of its divisors is an integer number (1368360).

Almost surely, 2^11728740 is an apocalyptic number.

11728740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11728740 is an abundant number, since it is smaller than the sum of its proper divisors (21111900).

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

11728740 is a wasteful number, since it uses less digits than its factorization.

11728740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195491 (or 195489 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 11728740 is about 3424.7248064626. The cubic root of 11728740 is about 227.2045998953.

The spelling of 11728740 in words is "eleven million, seven hundred twenty-eight thousand, seven hundred forty".