745012100 has 72 divisors (see below), whose sum is σ = 1859672640. Its totient is φ = 253768320.

The previous prime is 745012091. The next prime is 745012127. The reversal of 745012100 is 1210547.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106511 + ... + 113289.

Almost surely, 2^745012100 is an apocalyptic number.

745012100 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 745012100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (929836320).

745012100 is an abundant number, since it is smaller than the sum of its proper divisors (1114660540).

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

745012100 is a wasteful number, since it uses less digits than its factorization.

745012100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6957 (or 6950 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 745012100 is about 27294.9097818623. The cubic root of 745012100 is about 906.5416779718.

Adding to 745012100 its reverse (1210547), we get a palindrome (746222647).

The spelling of 745012100 in words is "seven hundred forty-five million, twelve thousand, one hundred".