2196429840 has 480 divisors, whose sum is σ = 8502848640. Its totient is φ = 503193600.

The previous prime is 2196429799. The next prime is 2196429841. The reversal of 2196429840 is 489246912.

2196429840 is a `hidden beast` number, since 219 + 6 + 429 + 8 + 4 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (2196429841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 16766575 + ... + 16766705.

It is an arithmetic number, because the mean of its divisors is an integer number (17714268).

Almost surely, 2^2196429840 is an apocalyptic number.

2196429840 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 2196429840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4251424320).

2196429840 is an abundant number, since it is smaller than the sum of its proper divisors (6306418800).

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

2196429840 is a wasteful number, since it uses less digits than its factorization.

2196429840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 2196429840 is about 46866.0841120741. The cubic root of 2196429840 is about 1299.8875326767.

The spelling of 2196429840 in words is "two billion, one hundred ninety-six million, four hundred twenty-nine thousand, eight hundred forty".