2785397406 has 16 divisors (see below), whose sum is σ = 6077230848. Its totient is φ = 844059800.

The previous prime is 2785397347. The next prime is 2785397413. The reversal of 2785397406 is 6047935872.

It is a congruent number.

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, 21101430 + ... + 21101561.

It is an arithmetic number, because the mean of its divisors is an integer number (379826928).

Almost surely, 2^2785397406 is an apocalyptic number.

2785397406 is an abundant number, since it is smaller than the sum of its proper divisors (3291833442).

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

2785397406 is a wasteful number, since it uses less digits than its factorization.

2785397406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42203007.

The product of its (nonzero) digits is 2540160, while the sum is 51.

The square root of 2785397406 is about 52776.8643062469. The cubic root of 2785397406 is about 1407.0052640448.

The spelling of 2785397406 in words is "two billion, seven hundred eighty-five million, three hundred ninety-seven thousand, four hundred six".