1420443648 has 360 divisors, whose sum is σ = 4797088800. Its totient is φ = 414056448.

The previous prime is 1420443643. The next prime is 1420443659. The reversal of 1420443648 is 8463440241.

1420443648 is a `hidden beast` number, since 1 + 4 + 2 + 0 + 4 + 4 + 3 + 648 = 666.

It is a super-3 number, since 3×1420443648³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1420443643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74760183 + ... + 74760201.

Almost surely, 2^1420443648 is an apocalyptic number.

1420443648 is a gapful number since it is divisible by the number (18) 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 1420443648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2398544400).

1420443648 is an abundant number, since it is smaller than the sum of its proper divisors (3376645152).

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

1420443648 is an equidigital number, since it uses as much as digits as its factorization.

1420443648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82 (or 37 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 36.

The square root of 1420443648 is about 37688.7735008716. The cubic root of 1420443648 is about 1124.1079078951.

Adding to 1420443648 its reverse (8463440241), we get a palindrome (9883883889).

The spelling of 1420443648 in words is "one billion, four hundred twenty million, four hundred forty-three thousand, six hundred forty-eight".