19956492 has 18 divisors (see below), whose sum is σ = 50445668. Its totient is φ = 6652152.

The previous prime is 19956491. The next prime is 19956499. The reversal of 19956492 is 29465991.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (19956491) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 277138 + ... + 277209.

Almost surely, 2^19956492 is an apocalyptic number.

19956492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19956492 is an abundant number, since it is smaller than the sum of its proper divisors (30489176).

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

19956492 is a wasteful number, since it uses less digits than its factorization.

19956492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554357 (or 554352 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 19956492 is about 4467.2689643674. The cubic root of 19956492 is about 271.2447872882.

The spelling of 19956492 in words is "nineteen million, nine hundred fifty-six thousand, four hundred ninety-two".