1445562420 has 192 divisors, whose sum is σ = 4480842240. Its totient is φ = 346931200.

The previous prime is 1445562413. The next prime is 1445562421. The reversal of 1445562420 is 242655441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445562421) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1640380 + ... + 1641260.

It is an arithmetic number, because the mean of its divisors is an integer number (23337720).

Almost surely, 2^1445562420 is an apocalyptic number.

1445562420 is a gapful number since it is divisible by the number (10) 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 1445562420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2240421120).

1445562420 is an abundant number, since it is smaller than the sum of its proper divisors (3035279820).

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

1445562420 is a wasteful number, since it uses less digits than its factorization.

1445562420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986 (or 984 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

The square root of 1445562420 is about 38020.5525998768. The cubic root of 1445562420 is about 1130.6953769369.

The spelling of 1445562420 in words is "one billion, four hundred forty-five million, five hundred sixty-two thousand, four hundred twenty".