2621678328 has 24 divisors (see below), whose sum is σ = 7100379000. Its totient is φ = 873892752.

The previous prime is 2621678321. The next prime is 2621678363. The reversal of 2621678328 is 8238761262.

2621678328 is a `hidden beast` number, since 262 + 1 + 67 + 8 + 328 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2621678321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18206028 + ... + 18206171.

It is an arithmetic number, because the mean of its divisors is an integer number (295849125).

Almost surely, 2^2621678328 is an apocalyptic number.

It is an amenable number.

2621678328 is an abundant number, since it is smaller than the sum of its proper divisors (4478700672).

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

2621678328 is a wasteful number, since it uses less digits than its factorization.

2621678328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36412211 (or 36412204 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 2621678328 is about 51202.3273689781. The cubic root of 2621678328 is about 1378.8799860077.

The spelling of 2621678328 in words is "two billion, six hundred twenty-one million, six hundred seventy-eight thousand, three hundred twenty-eight".