19620492 has 12 divisors (see below), whose sum is σ = 45781176. Its totient is φ = 6540160.

The previous prime is 19620457. The next prime is 19620493. The reversal of 19620492 is 29402691.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (19620493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 817509 + ... + 817532.

It is an arithmetic number, because the mean of its divisors is an integer number (3815098).

Almost surely, 2^19620492 is an apocalyptic number.

19620492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19620492 is an abundant number, since it is smaller than the sum of its proper divisors (26160684).

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

19620492 is a wasteful number, since it uses less digits than its factorization.

19620492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1635048 (or 1635046 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 19620492 is about 4429.5024551297. The cubic root of 19620492 is about 269.7138807196.

The spelling of 19620492 in words is "nineteen million, six hundred twenty thousand, four hundred ninety-two".