2921342784 has 112 divisors (see below), whose sum is σ = 8003414016. Its totient is φ = 939456000.

The previous prime is 2921342771. The next prime is 2921342797. The reversal of 2921342784 is 4872431292.

It is an interprime number because it is at equal distance from previous prime (2921342771) and next prime (2921342797).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 2779059 + ... + 2780109.

Almost surely, 2^2921342784 is an apocalyptic number.

2921342784 is a gapful number since it is divisible by the number (24) 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 2921342784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4001707008).

2921342784 is an abundant number, since it is smaller than the sum of its proper divisors (5082071232).

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

2921342784 is a wasteful number, since it uses less digits than its factorization.

2921342784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1564 (or 1554 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 2921342784 is about 54049.4475827459. The cubic root of 2921342784 is about 1429.5329597762.

The spelling of 2921342784 in words is "two billion, nine hundred twenty-one million, three hundred forty-two thousand, seven hundred eighty-four".