19135420 has 24 divisors (see below), whose sum is σ = 40544784. Its totient is φ = 7585536.

The previous prime is 19135399. The next prime is 19135427. The reversal of 19135420 is 2453191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19135427) 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, 1974 + ... + 6493.

It is an arithmetic number, because the mean of its divisors is an integer number (1689366).

Almost surely, 2^19135420 is an apocalyptic number.

19135420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19135420 is an abundant number, since it is smaller than the sum of its proper divisors (21409364).

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

19135420 is a wasteful number, since it uses less digits than its factorization.

19135420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8589 (or 8587 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 19135420 is about 4374.4051024111. The cubic root of 19135420 is about 267.4726207166.

The spelling of 19135420 in words is "nineteen million, one hundred thirty-five thousand, four hundred twenty".