2651398 has 16 divisors (see below), whose sum is σ = 4092480. Its totient is φ = 1287936.

The previous prime is 2651387. The next prime is 2651413. The reversal of 2651398 is 8931562.

It is a super-2 number, since 2×2651398² = 14059822708808, which contains 22 as substring.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹⁰ + 6⁸ + 5² + 1 + 3¹¹ + 9⁶ + 8⁶ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15240 + ... + 15412.

It is an arithmetic number, because the mean of its divisors is an integer number (255780).

2^2651398 is an apocalyptic number.

2651398 is a deficient number, since it is larger than the sum of its proper divisors (1441082).

2651398 is a wasteful number, since it uses less digits than its factorization.

2651398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351.

The product of its digits is 12960, while the sum is 34.

The square root of 2651398 is about 1628.3113952804. The cubic root of 2651398 is about 138.4070805626.

The spelling of 2651398 in words is "two million, six hundred fifty-one thousand, three hundred ninety-eight".