749031030 has 128 divisors (see below), whose sum is σ = 2200296960. Its totient is φ = 179809920.

The previous prime is 749031013. The next prime is 749031037. The reversal of 749031030 is 30130947.

It is a super-2 number, since 2×749031030² = 1122094967805721800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 749030985 and 749031003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749031037) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 316612 + ... + 318968.

It is an arithmetic number, because the mean of its divisors is an integer number (17189820).

Almost surely, 2^749031030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 749031030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1100148480).

749031030 is an abundant number, since it is smaller than the sum of its proper divisors (1451265930).

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

749031030 is a wasteful number, since it uses less digits than its factorization.

749031030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2491 (or 2485 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 749031030 is about 27368.4312666985. The cubic root of 749031030 is about 908.1688532712.

Adding to 749031030 its reverse (30130947), we get a palindrome (779161977).

The spelling of 749031030 in words is "seven hundred forty-nine million, thirty-one thousand, thirty".