19943952 has 40 divisors (see below), whose sum is σ = 58883136. Its totient is φ = 5698176.

The previous prime is 19943923. The next prime is 19943983. The reversal of 19943952 is 25934991.

It is a super-2 number, since 2×19943952² = 795522442756608, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29343 + ... + 30014.

Almost surely, 2^19943952 is an apocalyptic number.

19943952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19943952 is an abundant number, since it is smaller than the sum of its proper divisors (38939184).

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

19943952 is a wasteful number, since it uses less digits than its factorization.

19943952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59375 (or 59369 counting only the distinct ones).

The product of its digits is 87480, while the sum is 42.

The square root of 19943952 is about 4465.8652017274. The cubic root of 19943952 is about 271.1879616309.

The spelling of 19943952 in words is "nineteen million, nine hundred forty-three thousand, nine hundred fifty-two".