20344774 has 16 divisors (see below), whose sum is σ = 31507056. Its totient is φ = 9846400.

The previous prime is 20344759. The next prime is 20344789. The reversal of 20344774 is 47744302.

It is an interprime number because it is at equal distance from previous prime (20344759) and next prime (20344789).

It is a super-2 number, since 2×20344774² = 827819658222152, which contains 22 as substring.

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, 10329 + ... + 12139.

It is an arithmetic number, because the mean of its divisors is an integer number (1969191).

Almost surely, 2^20344774 is an apocalyptic number.

20344774 is a deficient number, since it is larger than the sum of its proper divisors (11162282).

20344774 is a wasteful number, since it uses less digits than its factorization.

20344774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991.

The product of its (nonzero) digits is 18816, while the sum is 31.

The square root of 20344774 is about 4510.5181520530. The cubic root of 20344774 is about 272.9926514322.

The spelling of 20344774 in words is "twenty million, three hundred forty-four thousand, seven hundred seventy-four".