2644992000 has 672 divisors, whose sum is σ = 11163507264. Its totient is φ = 589824000.

The previous prime is 2644991933. The next prime is 2644992037. The reversal of 2644992000 is 2994462.

2644992000 is a `hidden beast` number, since 2 + 6 + 449 + 9 + 200 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

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 47 ways as a sum of consecutive naturals, for example, 64511980 + ... + 64512020.

It is an arithmetic number, because the mean of its divisors is an integer number (16612362).

Almost surely, 2^2644992000 is an apocalyptic number.

2644992000 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 2644992000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5581753632).

2644992000 is an abundant number, since it is smaller than the sum of its proper divisors (8518515264).

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

2644992000 is an equidigital number, since it uses as much as digits as its factorization.

2644992000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 2644992000 is about 51429.4857061589. The cubic root of 2644992000 is about 1382.9552296416.

The spelling of 2644992000 in words is "two billion, six hundred forty-four million, nine hundred ninety-two thousand".