1428644436500 has 48 divisors (see below), whose sum is σ = 3255818582016. Its totient is φ = 546611780000.

The previous prime is 1428644436487. The next prime is 1428644436553. The reversal of 1428644436500 is 56344468241.

It is a happy number.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62103476 + ... + 62126475.

It is an arithmetic number, because the mean of its divisors is an integer number (67829553792).

Almost surely, 2^{1428644436500} is an apocalyptic number.

1428644436500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1428644436500 is an abundant number, since it is smaller than the sum of its proper divisors (1827174145516).

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

1428644436500 is a wasteful number, since it uses less digits than its factorization.

1428644436500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124229993 (or 124229981 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 47.

The spelling of 1428644436500 in words is "one trillion, four hundred twenty-eight billion, six hundred forty-four million, four hundred thirty-six thousand, five hundred".