19247490 has 32 divisors (see below), whose sum is σ = 51327360. Its totient is φ = 5132592.

The previous prime is 19247483. The next prime is 19247521. The reversal of 19247490 is 9474291.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35374 + ... + 35913.

It is an arithmetic number, because the mean of its divisors is an integer number (1603980).

Almost surely, 2^19247490 is an apocalyptic number.

19247490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19247490 is an abundant number, since it is smaller than the sum of its proper divisors (32079870).

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

19247490 is a wasteful number, since it uses less digits than its factorization.

19247490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71303 (or 71297 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 19247490 is about 4387.1961433243. The cubic root of 19247490 is about 267.9937716678.

The spelling of 19247490 in words is "nineteen million, two hundred forty-seven thousand, four hundred ninety".