2651838 has 32 divisors (see below), whose sum is σ = 6130176. Its totient is φ = 749088.

The previous prime is 2651837. The next prime is 2651867. The reversal of 2651838 is 8381562.

It is a happy number.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2651799 and 2651808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2651837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4020 + ... + 4632.

It is an arithmetic number, because the mean of its divisors is an integer number (191568).

2^2651838 is an apocalyptic number.

2651838 is an abundant number, since it is smaller than the sum of its proper divisors (3478338).

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

2651838 is a wasteful number, since it uses less digits than its factorization.

2651838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728.

The product of its digits is 11520, while the sum is 33.

The square root of 2651838 is about 1628.4464989677. The cubic root of 2651838 is about 138.4147363662.

The spelling of 2651838 in words is "two million, six hundred fifty-one thousand, eight hundred thirty-eight".