7745136 has 120 divisors (see below), whose sum is σ = 24172560. Its totient is φ = 2128896.

The previous prime is 7745131. The next prime is 7745147. The reversal of 7745136 is 6315477.

7745136 is digitally balanced in base 4, base 5 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is an Ulam number.

7745136 is strictly pandigital in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 7745097 and 7745106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7745131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86980 + ... + 87068.

It is an arithmetic number, because the mean of its divisors is an integer number (201438).

Almost surely, 2^7745136 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 7745136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12086280).

7745136 is an abundant number, since it is smaller than the sum of its proper divisors (16427424).

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

7745136 is a wasteful number, since it uses less digits than its factorization.

7745136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 138 counting only the distinct ones).

The product of its digits is 17640, while the sum is 33.

The square root of 7745136 is about 2783.0084441122. The cubic root of 7745136 is about 197.8531714225.

The spelling of 7745136 in words is "seven million, seven hundred forty-five thousand, one hundred thirty-six".