7256406 has 16 divisors (see below), whose sum is σ = 14554800. Its totient is φ = 2411808.

The previous prime is 7256401. The next prime is 7256497. The reversal of 7256406 is 6046527.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7256401) 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, 780 + ... + 3888.

It is an arithmetic number, because the mean of its divisors is an integer number (909675).

Almost surely, 2^7256406 is an apocalyptic number.

7256406 is an abundant number, since it is smaller than the sum of its proper divisors (7298394).

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

7256406 is a wasteful number, since it uses less digits than its factorization.

7256406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3503.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 7256406 is about 2693.7717052490. The cubic root of 7256406 is about 193.6008194704.

The spelling of 7256406 in words is "seven million, two hundred fifty-six thousand, four hundred six".