2621390 has 8 divisors (see below), whose sum is σ = 4718520. Its totient is φ = 1048552.

The previous prime is 2621387. The next prime is 2621431. The reversal of 2621390 is 931262.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131060 + ... + 131079.

It is an arithmetic number, because the mean of its divisors is an integer number (589815).

2^2621390 is an apocalyptic number.

2621390 is a deficient number, since it is larger than the sum of its proper divisors (2097130).

2621390 is a wasteful number, since it uses less digits than its factorization.

2621390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262146.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 2621390 is about 1619.0707211237. The cubic root of 2621390 is about 137.8829435147.

The spelling of 2621390 in words is "two million, six hundred twenty-one thousand, three hundred ninety".