19425740 has 24 divisors (see below), whose sum is σ = 41898192. Its totient is φ = 7560000.

The previous prime is 19425739. The next prime is 19425761. The reversal of 19425740 is 4752491.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 19425697 and 19425706.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12386 + ... + 13865.

It is an arithmetic number, because the mean of its divisors is an integer number (1745758).

Almost surely, 2^19425740 is an apocalyptic number.

19425740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19425740 is an abundant number, since it is smaller than the sum of its proper divisors (22472452).

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

19425740 is a wasteful number, since it uses less digits than its factorization.

19425740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26297 (or 26295 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 19425740 is about 4407.4641235068. The cubic root of 19425740 is about 268.8185229996.

The spelling of 19425740 in words is "nineteen million, four hundred twenty-five thousand, seven hundred forty".