749136 has 20 divisors (see below), whose sum is σ = 1935392. Its totient is φ = 249696.

The previous prime is 749129. The next prime is 749137. The reversal of 749136 is 631947.

It is a happy number.

749136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×749136² = 1122409492992, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7756 + ... + 7851.

2⁷⁴⁹¹³⁶ is an apocalyptic number.

It is an amenable number.

749136 is an abundant number, since it is smaller than the sum of its proper divisors (1186256).

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

749136 is a wasteful number, since it uses less digits than its factorization.

749136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15618 (or 15612 counting only the distinct ones).

The product of its digits is 4536, while the sum is 30.

The square root of 749136 is about 865.5264294058. The cubic root of 749136 is about 90.8211275204.

The spelling of 749136 in words is "seven hundred forty-nine thousand, one hundred thirty-six".