19745004 has 12 divisors (see below), whose sum is σ = 46071704. Its totient is φ = 6581664.

The previous prime is 19744993. The next prime is 19745021. The reversal of 19745004 is 40054791.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 822697 + ... + 822720.

Almost surely, 2^19745004 is an apocalyptic number.

It is an amenable number.

19745004 is an abundant number, since it is smaller than the sum of its proper divisors (26326700).

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

19745004 is a wasteful number, since it uses less digits than its factorization.

19745004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645424 (or 1645422 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 19745004 is about 4443.5350791909. The cubic root of 19745004 is about 270.2832144802.

Adding to 19745004 its reverse (40054791), we get a palindrome (59799795).

The spelling of 19745004 in words is "nineteen million, seven hundred forty-five thousand, four".