7791432 has 48 divisors (see below), whose sum is σ = 21418320. Its totient is φ = 2360160.

The previous prime is 7791431. The next prime is 7791437. The reversal of 7791432 is 2341977.

7791432 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×7791432² = 121412825221248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7791393 and 7791402.

It is not an unprimeable number, because it can be changed into a prime (7791431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1563 + ... + 4245.

It is an arithmetic number, because the mean of its divisors is an integer number (446215).

Almost surely, 2^7791432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7791432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10709160).

7791432 is an abundant number, since it is smaller than the sum of its proper divisors (13626888).

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

7791432 is a wasteful number, since it uses less digits than its factorization.

7791432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2714 (or 2699 counting only the distinct ones).

The product of its digits is 10584, while the sum is 33.

The square root of 7791432 is about 2791.3136692246. The cubic root of 7791432 is about 198.2466063079.

It can be divided in two parts, 779 and 1432, that added together give a triangular number (2211 = T₆₆).

The spelling of 7791432 in words is "seven million, seven hundred ninety-one thousand, four hundred thirty-two".