745478140 has 48 divisors (see below), whose sum is σ = 1709820000. Its totient is φ = 270766080.

The previous prime is 745478131. The next prime is 745478161. The reversal of 745478140 is 41874547.

It is a happy number.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 745478093 and 745478102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273424 + ... + 276136.

It is an arithmetic number, because the mean of its divisors is an integer number (35621250).

Almost surely, 2^745478140 is an apocalyptic number.

It is an amenable number.

745478140 is an abundant number, since it is smaller than the sum of its proper divisors (964341860).

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

745478140 is a wasteful number, since it uses less digits than its factorization.

745478140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3982 (or 3980 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 40.

The square root of 745478140 is about 27303.4455701107. The cubic root of 745478140 is about 906.7306666784.

The spelling of 745478140 in words is "seven hundred forty-five million, four hundred seventy-eight thousand, one hundred forty".