2639154 has 32 divisors (see below), whose sum is σ = 6230016. Its totient is φ = 729360.

The previous prime is 2639149. The next prime is 2639171. The reversal of 2639154 is 4519362.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 289 + ... + 2315.

It is an arithmetic number, because the mean of its divisors is an integer number (194688).

2^2639154 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2639154, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3115008).

2639154 is an abundant number, since it is smaller than the sum of its proper divisors (3590862).

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

2639154 is a wasteful number, since it uses less digits than its factorization.

2639154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2070.

The product of its digits is 6480, while the sum is 30.

The square root of 2639154 is about 1624.5473215638. The cubic root of 2639154 is about 138.1936998461.

The spelling of 2639154 in words is "two million, six hundred thirty-nine thousand, one hundred fifty-four".