19451796 has 96 divisors (see below), whose sum is σ = 57200640. Its totient is φ = 5007744.

The previous prime is 19451777. The next prime is 19451821. The reversal of 19451796 is 69715491.

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 polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51135 + ... + 51513.

It is an arithmetic number, because the mean of its divisors is an integer number (595840).

Almost surely, 2^19451796 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19451796, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28600320).

19451796 is an abundant number, since it is smaller than the sum of its proper divisors (37748844).

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

19451796 is a wasteful number, since it uses less digits than its factorization.

19451796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453 (or 451 counting only the distinct ones).

The product of its digits is 68040, while the sum is 42.

The square root of 19451796 is about 4410.4190277115. The cubic root of 19451796 is about 268.9386592397.

It can be divided in two parts, 1945 and 1796, that added together give a triangular number (3741 = T₈₆).

The spelling of 19451796 in words is "nineteen million, four hundred fifty-one thousand, seven hundred ninety-six".