745932780 has 384 divisors, whose sum is σ = 2661120000. Its totient is φ = 172440576.

The previous prime is 745932779. The next prime is 745932791. The reversal of 745932780 is 87239547.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 6843366 + ... + 6843474.

It is an arithmetic number, because the mean of its divisors is an integer number (6930000).

Almost surely, 2^745932780 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 745932780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1330560000).

745932780 is an abundant number, since it is smaller than the sum of its proper divisors (1915187220).

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

745932780 is a wasteful number, since it uses less digits than its factorization.

745932780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 745932780 is about 27311.7699902441. The cubic root of 745932780 is about 906.9149565697.

The spelling of 745932780 in words is "seven hundred forty-five million, nine hundred thirty-two thousand, seven hundred eighty".