748440 has 192 divisors, whose sum is σ = 3144960. Its totient is φ = 155520.

The previous prime is 748387. The next prime is 748441. The reversal of 748440 is 44847.

748440 = T₁₁ + T₁₂ + ... + T₁₆₄.

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

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (748441) by changing a digit.

748440 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68035 + ... + 68045.

It is an arithmetic number, because the mean of its divisors is an integer number (16380).

2⁷⁴⁸⁴⁴⁰ is an apocalyptic number.

748440 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 748440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1572480).

748440 is an abundant number, since it is smaller than the sum of its proper divisors (2396520).

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

748440 is a wasteful number, since it uses less digits than its factorization.

748440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44 (or 28 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 748440 is about 865.1242685302. The cubic root of 748440 is about 90.7929924017.

The spelling of 748440 in words is "seven hundred forty-eight thousand, four hundred forty".