1516406 has 4 divisors (see below), whose sum is σ = 2274612. Its totient is φ = 758202.

The previous prime is 1516397. The next prime is 1516421. The reversal of 1516406 is 6046151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6046151 = 311 ⋅19441.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 379100 + ... + 379103.

It is an arithmetic number, because the mean of its divisors is an integer number (568653).

2^1516406 is an apocalyptic number.

1516406 is a deficient number, since it is larger than the sum of its proper divisors (758206).

1516406 is an equidigital number, since it uses as much as digits as its factorization.

1516406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758205.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1516406 is about 1231.4243785146. The cubic root of 1516406 is about 114.8872492891.

The spelling of 1516406 in words is "one million, five hundred sixteen thousand, four hundred six".