749700144 has 80 divisors (see below), whose sum is σ = 2157004800. Its totient is φ = 249309504.

The previous prime is 749700143. The next prime is 749700163. The reversal of 749700144 is 441007947.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 749700099 and 749700108.

It is not an unprimeable number, because it can be changed into a prime (749700143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205117 + ... + 208739.

It is an arithmetic number, because the mean of its divisors is an integer number (26962560).

Almost surely, 2^749700144 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 749700144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1078502400).

749700144 is an abundant number, since it is smaller than the sum of its proper divisors (1407304656).

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

749700144 is a wasteful number, since it uses less digits than its factorization.

749700144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4119 (or 4107 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 749700144 is about 27380.6527314452. The cubic root of 749700144 is about 908.4391970508.

The spelling of 749700144 in words is "seven hundred forty-nine million, seven hundred thousand, one hundred forty-four".