2562720406 has 16 divisors (see below), whose sum is σ = 3920038416. Its totient is φ = 1256288256.

The previous prime is 2562720389. The next prime is 2562720409. The reversal of 2562720406 is 6040272652.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2562720409) 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, 40971 + ... + 82486.

It is an arithmetic number, because the mean of its divisors is an integer number (245002401).

Almost surely, 2^2562720406 is an apocalyptic number.

2562720406 is a deficient number, since it is larger than the sum of its proper divisors (1357318010).

2562720406 is a wasteful number, since it uses less digits than its factorization.

2562720406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123663.

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 2562720406 is about 50623.3187967759. The cubic root of 2562720406 is about 1368.4651513027.

The spelling of 2562720406 in words is "two billion, five hundred sixty-two million, seven hundred twenty thousand, four hundred six".