745181424 has 80 divisors (see below), whose sum is σ = 2303498400. Its totient is φ = 229284864.

The previous prime is 745181401. The next prime is 745181447. The reversal of 745181424 is 424181547.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (745181401) and next prime (745181447).

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

It is a congruent number.

It is an unprimeable number.

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, 60729 + ... + 71960.

It is an arithmetic number, because the mean of its divisors is an integer number (28793730).

Almost surely, 2^745181424 is an apocalyptic number.

It is an amenable number.

745181424 is an abundant number, since it is smaller than the sum of its proper divisors (1558316976).

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

745181424 is a wasteful number, since it uses less digits than its factorization.

745181424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132719 (or 132707 counting only the distinct ones).

The product of its digits is 35840, while the sum is 36.

The square root of 745181424 is about 27298.0113561409. The cubic root of 745181424 is about 906.6103514138.

The spelling of 745181424 in words is "seven hundred forty-five million, one hundred eighty-one thousand, four hundred twenty-four".