2921538 has 8 divisors (see below), whose sum is σ = 5843088. Its totient is φ = 973844.

The previous prime is 2921531. The next prime is 2921539. The reversal of 2921538 is 8351292.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

2921538 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (2921531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243456 + ... + 243467.

It is an arithmetic number, because the mean of its divisors is an integer number (730386).

2^2921538 is an apocalyptic number.

2921538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2921538 is a wasteful number, since it uses less digits than its factorization.

2921538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486928.

The product of its digits is 4320, while the sum is 30.

The square root of 2921538 is about 1709.2507130319. The cubic root of 2921538 is about 142.9564801468.

It can be divided in two parts, 292 and 1538, that added together give a triangular number (1830 = T₆₀).

The spelling of 2921538 in words is "two million, nine hundred twenty-one thousand, five hundred thirty-eight".