1445416720 has 40 divisors (see below), whose sum is σ = 3666104640. Its totient is φ = 525605760.

The previous prime is 1445416699. The next prime is 1445416723. The reversal of 1445416720 is 276145441.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (1445416723) 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, 820380 + ... + 822139.

It is an arithmetic number, because the mean of its divisors is an integer number (91652616).

Almost surely, 2^1445416720 is an apocalyptic number.

1445416720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1445416720 is an abundant number, since it is smaller than the sum of its proper divisors (2220687920).

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

1445416720 is a wasteful number, since it uses less digits than its factorization.

1445416720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642543 (or 1642537 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 1445416720 is about 38018.6364826515. The cubic root of 1445416720 is about 1130.6573876051.

The spelling of 1445416720 in words is "one billion, four hundred forty-five million, four hundred sixteen thousand, seven hundred twenty".