19252640 has 48 divisors (see below), whose sum is σ = 49623840. Its totient is φ = 7000320.

The previous prime is 19252627. The next prime is 19252661. The reversal of 19252640 is 4625291.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3710 + ... + 7229.

It is an arithmetic number, because the mean of its divisors is an integer number (1033830).

Almost surely, 2^19252640 is an apocalyptic number.

19252640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19252640 is an abundant number, since it is smaller than the sum of its proper divisors (30371200).

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

19252640 is a wasteful number, since it uses less digits than its factorization.

19252640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10965 (or 10957 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 19252640 is about 4387.7830393036. The cubic root of 19252640 is about 268.0176716646.

The spelling of 19252640 in words is "nineteen million, two hundred fifty-two thousand, six hundred forty".