19248990 has 16 divisors (see below), whose sum is σ = 46197648. Its totient is φ = 5133056.

The previous prime is 19248961. The next prime is 19248997. The reversal of 19248990 is 9984291.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19248997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320787 + ... + 320846.

It is an arithmetic number, because the mean of its divisors is an integer number (2887353).

Almost surely, 2^19248990 is an apocalyptic number.

19248990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19248990 is an abundant number, since it is smaller than the sum of its proper divisors (26948658).

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

19248990 is a wasteful number, since it uses less digits than its factorization.

19248990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641643.

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 19248990 is about 4387.3670920040. The cubic root of 19248990 is about 268.0007332719. Note that the first 3 decimals are identical.

The spelling of 19248990 in words is "nineteen million, two hundred forty-eight thousand, nine hundred ninety".