19146340 has 12 divisors (see below), whose sum is σ = 40207356. Its totient is φ = 7658528.

The previous prime is 19146329. The next prime is 19146341. The reversal of 19146340 is 4364191.

It can be written as a sum of positive squares in 2 ways, for example, as 11888704 + 7257636 = 3448^2 + 2694^2 .

It is a junction number, because it is equal to n+sod(n) for n = 19146299 and 19146308.

It is not an unprimeable number, because it can be changed into a prime (19146341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 478639 + ... + 478678.

It is an arithmetic number, because the mean of its divisors is an integer number (3350613).

Almost surely, 2^19146340 is an apocalyptic number.

19146340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19146340 is an abundant number, since it is smaller than the sum of its proper divisors (21061016).

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

19146340 is a wasteful number, since it uses less digits than its factorization.

19146340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957326 (or 957324 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 19146340 is about 4375.6530941106. The cubic root of 19146340 is about 267.5234905274.

The spelling of 19146340 in words is "nineteen million, one hundred forty-six thousand, three hundred forty".