19212072 has 64 divisors (see below), whose sum is σ = 53300160. Its totient is φ = 5721600.

The previous prime is 19212047. The next prime is 19212077. The reversal of 19212072 is 27021291.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (19212077) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15508 + ... + 16700.

It is an arithmetic number, because the mean of its divisors is an integer number (832815).

Almost surely, 2^19212072 is an apocalyptic number.

19212072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

19212072 is the 3579-th pentagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19212072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26650080).

19212072 is an abundant number, since it is smaller than the sum of its proper divisors (34088088).

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

19212072 is a wasteful number, since it uses less digits than its factorization.

19212072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274 (or 1270 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 19212072 is about 4383.1577658122. The cubic root of 19212072 is about 267.8292890706.

It can be divided in two parts, 1921 and 2072, that added together give a palindrome (3993).

The spelling of 19212072 in words is "nineteen million, two hundred twelve thousand, seventy-two".