2656023390 has 96 divisors (see below), whose sum is σ = 7369989120. Its totient is φ = 661312512.

The previous prime is 2656023367. The next prime is 2656023449. The reversal of 2656023390 is 933206562.

2656023390 is a `hidden beast` number, since 2 + 6 + 560 + 2 + 3 + 3 + 90 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 187476 + ... + 201144.

It is an arithmetic number, because the mean of its divisors is an integer number (76770720).

Almost surely, 2^2656023390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2656023390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3684994560).

2656023390 is an abundant number, since it is smaller than the sum of its proper divisors (4713965730).

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

2656023390 is a wasteful number, since it uses less digits than its factorization.

2656023390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13826 (or 13823 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

The square root of 2656023390 is about 51536.6218334109. The cubic root of 2656023390 is about 1384.8751797915.

The spelling of 2656023390 in words is "two billion, six hundred fifty-six million, twenty-three thousand, three hundred ninety".