2721450 has 24 divisors (see below), whose sum is σ = 6749568. Its totient is φ = 725680.

The previous prime is 2721449. The next prime is 2721451. The reversal of 2721450 is 541272.

It is an interprime number because it is at equal distance from previous prime (2721449) and next prime (2721451).

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2721451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8922 + ... + 9221.

It is an arithmetic number, because the mean of its divisors is an integer number (281232).

2^2721450 is an apocalyptic number.

2721450 is an abundant number, since it is smaller than the sum of its proper divisors (4028118).

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

2721450 is a wasteful number, since it uses less digits than its factorization.

2721450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18158 (or 18153 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 2721450 is about 1649.6817874972. The cubic root of 2721450 is about 139.6154412413.

The spelling of 2721450 in words is "two million, seven hundred twenty-one thousand, four hundred fifty".