222078780 has 384 divisors, whose sum is σ = 887040000. Its totient is φ = 45722880.

The previous prime is 222078757. The next prime is 222078793. The reversal of 222078780 is 87870222.

222078780 is digitally balanced in base 3, 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 an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2037366 + ... + 2037474.

It is an arithmetic number, because the mean of its divisors is an integer number (2310000).

Almost surely, 2^222078780 is an apocalyptic number.

222078780 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 222078780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (443520000).

222078780 is an abundant number, since it is smaller than the sum of its proper divisors (664961220).

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

222078780 is a wasteful number, since it uses less digits than its factorization.

222078780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 222078780 is about 14902.3078749568. The cubic root of 222078780 is about 605.5765103180.

The spelling of 222078780 in words is "two hundred twenty-two million, seventy-eight thousand, seven hundred eighty".