11720478 has 64 divisors (see below), whose sum is σ = 30523392. Its totient is φ = 2909280.

The previous prime is 11720447. The next prime is 11720483. The reversal of 11720478 is 87402711.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10075 + ... + 11177.

It is an arithmetic number, because the mean of its divisors is an integer number (476928).

Almost surely, 2^11720478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11720478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15261696).

11720478 is an abundant number, since it is smaller than the sum of its proper divisors (18802914).

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

11720478 is a wasteful number, since it uses less digits than its factorization.

11720478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149.

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

The square root of 11720478 is about 3423.5183656583. The cubic root of 11720478 is about 227.1512379442.

The spelling of 11720478 in words is "eleven million, seven hundred twenty thousand, four hundred seventy-eight".