2378221560 has 768 divisors, whose sum is σ = 9906624000. Its totient is φ = 505128960.

The previous prime is 2378221543. The next prime is 2378221561. The reversal of 2378221560 is 651228732.

2378221560 is a `hidden beast` number, since 2 + 3 + 78 + 2 + 21 + 560 = 666.

2378221560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2378221561) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 40308811 + ... + 40308869.

It is an arithmetic number, because the mean of its divisors is an integer number (12899250).

Almost surely, 2^2378221560 is an apocalyptic number.

2378221560 is a gapful number since it is divisible by the number (20) 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 2378221560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4953312000).

2378221560 is an abundant number, since it is smaller than the sum of its proper divisors (7528402440).

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

2378221560 is a wasteful number, since it uses less digits than its factorization.

2378221560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 2378221560 is about 48767.0130313514. The cubic root of 2378221560 is about 1334.8038090685.

The spelling of 2378221560 in words is "two billion, three hundred seventy-eight million, two hundred twenty-one thousand, five hundred sixty".