2921495040 has 400 divisors, whose sum is σ = 10662172488. Its totient is φ = 764411904.

The previous prime is 2921495023. The next prime is 2921495041. The reversal of 2921495040 is 405941292.

2921495040 is a `hidden beast` number, since 2 + 9 + 2 + 149 + 504 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2083739904 + 837755136 = 45648^2 + 28944^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2921494986 and 2921495004.

It is not an unprimeable number, because it can be changed into a prime (2921495041) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 15137184 + ... + 15137376.

Almost surely, 2^2921495040 is an apocalyptic number.

2921495040 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 2921495040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5331086244).

2921495040 is an abundant number, since it is smaller than the sum of its proper divisors (7740677448).

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

2921495040 is an equidigital number, since it uses as much as digits as its factorization.

2921495040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301 (or 276 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 2921495040 is about 54050.8560524253. The cubic root of 2921495040 is about 1429.5577943820.

The spelling of 2921495040 in words is "two billion, nine hundred twenty-one million, four hundred ninety-five thousand, forty".