19970236 has 24 divisors (see below), whose sum is σ = 41058864. Its totient is φ = 8378880.

The previous prime is 19970227. The next prime is 19970267. The reversal of 19970236 is 63207991.

It is a junction number, because it is equal to n+sod(n) for n = 19970195 and 19970204.

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, 16885 + ... + 18028.

It is an arithmetic number, because the mean of its divisors is an integer number (1710786).

Almost surely, 2^19970236 is an apocalyptic number.

It is an amenable number.

19970236 is an abundant number, since it is smaller than the sum of its proper divisors (21088628).

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

19970236 is a wasteful number, since it uses less digits than its factorization.

19970236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34941 (or 34939 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 19970236 is about 4468.8069996365. The cubic root of 19970236 is about 271.3070415973.

The spelling of 19970236 in words is "nineteen million, nine hundred seventy thousand, two hundred thirty-six".