1445623428 has 48 divisors (see below), whose sum is σ = 3514029120. Its totient is φ = 462144000.

The previous prime is 1445623427. The next prime is 1445623451. The reversal of 1445623428 is 8243265441.

It is not an unprimeable number, because it can be changed into a prime (1445623427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4128 + ... + 53928.

It is an arithmetic number, because the mean of its divisors is an integer number (73208940).

Almost surely, 2^1445623428 is an apocalyptic number.

It is an amenable number.

1445623428 is an abundant number, since it is smaller than the sum of its proper divisors (2068405692).

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

1445623428 is a wasteful number, since it uses less digits than its factorization.

1445623428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49908 (or 49906 counting only the distinct ones).

The product of its digits is 184320, while the sum is 39.

The square root of 1445623428 is about 38021.3548943222. The cubic root of 1445623428 is about 1130.7112832011.

Adding to 1445623428 its reverse (8243265441), we get a palindrome (9688888869).

The spelling of 1445623428 in words is "one billion, four hundred forty-five million, six hundred twenty-three thousand, four hundred twenty-eight".