2906440 has 16 divisors (see below), whose sum is σ = 6539580. Its totient is φ = 1162560.

The previous prime is 2906429. The next prime is 2906443. The reversal of 2906440 is 446092.

It can be written as a sum of positive squares in 2 ways, for example, as 2553604 + 352836 = 1598^2 + 594^2 .

It is not an unprimeable number, because it can be changed into a prime (2906443) 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, 36291 + ... + 36370.

2^2906440 is an apocalyptic number.

2906440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2906440 is an abundant number, since it is smaller than the sum of its proper divisors (3633140).

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

2906440 is a wasteful number, since it uses less digits than its factorization.

2906440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72672 (or 72668 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 2906440 is about 1704.8284371162. The cubic root of 2906440 is about 142.7097966473.

The spelling of 2906440 in words is "two million, nine hundred six thousand, four hundred forty".