1445878628 has 24 divisors (see below), whose sum is σ = 2680691832. Its totient is φ = 680016384.

The previous prime is 1445878627. The next prime is 1445878667. The reversal of 1445878628 is 8268785441.

It can be written as a sum of positive squares in 4 ways, for example, as 392356864 + 1053521764 = 19808^2 + 32458^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1445878628.

It is not an unprimeable number, because it can be changed into a prime (1445878627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134426 + ... + 144782.

It is an arithmetic number, because the mean of its divisors is an integer number (111695493).

Almost surely, 2^1445878628 is an apocalyptic number.

It is an amenable number.

1445878628 is a deficient number, since it is larger than the sum of its proper divisors (1234813204).

1445878628 is a wasteful number, since it uses less digits than its factorization.

1445878628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12431 (or 12429 counting only the distinct ones).

The product of its digits is 3440640, while the sum is 53.

The square root of 1445878628 is about 38024.7107549814. The cubic root of 1445878628 is about 1130.7778151752. Note that the first 3 decimals are identical.

The spelling of 1445878628 in words is "one billion, four hundred forty-five million, eight hundred seventy-eight thousand, six hundred twenty-eight".