219697380 has 432 divisors, whose sum is σ = 875629440. Its totient is φ = 45505152.

The previous prime is 219697367. The next prime is 219697391. The reversal of 219697380 is 83796912.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 9552049 + ... + 9552071.

It is an arithmetic number, because the mean of its divisors is an integer number (2026920).

Almost surely, 2^219697380 is an apocalyptic number.

219697380 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 219697380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (437814720).

219697380 is an abundant number, since it is smaller than the sum of its proper divisors (655932060).

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

219697380 is a wasteful number, since it uses less digits than its factorization.

219697380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 219697380 is about 14822.1921455634. The cubic root of 219697380 is about 603.4041497481.

The spelling of 219697380 in words is "two hundred nineteen million, six hundred ninety-seven thousand, three hundred eighty".