19945488 has 40 divisors (see below), whose sum is σ = 54559008. Its totient is φ = 6257152.

The previous prime is 19945487. The next prime is 19945489. The reversal of 19945488 is 88454991.

It is an interprime number because it is at equal distance from previous prime (19945487) and next prime (19945489).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (19945487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11406 + ... + 13037.

Almost surely, 2^19945488 is an apocalyptic number.

It is an amenable number.

19945488 is an abundant number, since it is smaller than the sum of its proper divisors (34613520).

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

19945488 is a wasteful number, since it uses less digits than its factorization.

19945488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24471 (or 24465 counting only the distinct ones).

The product of its digits is 414720, while the sum is 48.

The square root of 19945488 is about 4466.0371695721. The cubic root of 19945488 is about 271.1949233741.

The spelling of 19945488 in words is "nineteen million, nine hundred forty-five thousand, four hundred eighty-eight".