19348940 has 24 divisors (see below), whose sum is σ = 43758960. Its totient is φ = 7144128.

The previous prime is 19348937. The next prime is 19348951. The reversal of 19348940 is 4984391.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 19348894 and 19348903.

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, 36950 + ... + 37469.

It is an arithmetic number, because the mean of its divisors is an integer number (1823290).

Almost surely, 2^19348940 is an apocalyptic number.

19348940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19348940 is an abundant number, since it is smaller than the sum of its proper divisors (24410020).

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

19348940 is a wasteful number, since it uses less digits than its factorization.

19348940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74441 (or 74439 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 19348940 is about 4398.7430022678. The cubic root of 19348940 is about 268.4637955500.

The spelling of 19348940 in words is "nineteen million, three hundred forty-eight thousand, nine hundred forty".