19951344 has 60 divisors (see below), whose sum is σ = 63815856. Its totient is φ = 5700096.

The previous prime is 19951343. The next prime is 19951369. The reversal of 19951344 is 44315991.

It is a happy number.

It is a super-2 number, since 2×19951344² = 796112254812672, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 19951299 and 19951308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19951343) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8889 + ... + 10904.

Almost surely, 2^19951344 is an apocalyptic number.

19951344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

19951344 is an abundant number, since it is smaller than the sum of its proper divisors (43864512).

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

19951344 is a wasteful number, since it uses less digits than its factorization.

19951344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19814 (or 19805 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 19951344 is about 4466.6927362423. The cubic root of 19951344 is about 271.2214617417.

The spelling of 19951344 in words is "nineteen million, nine hundred fifty-one thousand, three hundred forty-four".