19400248 has 16 divisors (see below), whose sum is σ = 41572080. Its totient is φ = 8314368.

The previous prime is 19400233. The next prime is 19400317. The reversal of 19400248 is 84200491.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

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, 173161 + ... + 173272.

It is an arithmetic number, because the mean of its divisors is an integer number (2598255).

Almost surely, 2^19400248 is an apocalyptic number.

It is an amenable number.

19400248 is an abundant number, since it is smaller than the sum of its proper divisors (22171832).

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

19400248 is a wasteful number, since it uses less digits than its factorization.

19400248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346446 (or 346442 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 19400248 is about 4404.5712617688. The cubic root of 19400248 is about 268.7008831819.

The spelling of 19400248 in words is "nineteen million, four hundred thousand, two hundred forty-eight".