745122400 has 72 divisors (see below), whose sum is σ = 1984419864. Its totient is φ = 270950400.

The previous prime is 745122379. The next prime is 745122401. The reversal of 745122400 is 4221547.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745122401) 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 11 ways as a sum of consecutive naturals, for example, 33537 + ... + 51136.

It is an arithmetic number, because the mean of its divisors is an integer number (27561387).

Almost surely, 2^745122400 is an apocalyptic number.

It is an amenable number.

745122400 is an abundant number, since it is smaller than the sum of its proper divisors (1239297464).

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

745122400 is a wasteful number, since it uses less digits than its factorization.

745122400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84704 (or 84691 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 745122400 is about 27296.9302303391. The cubic root of 745122400 is about 906.5864139848.

Adding to 745122400 its reverse (4221547), we get a palindrome (749343947).

The spelling of 745122400 in words is "seven hundred forty-five million, one hundred twenty-two thousand, four hundred".