4072656 has 160 divisors (see below), whose sum is σ = 13713408. Its totient is φ = 1013760.

The previous prime is 4072637. The next prime is 4072661. The reversal of 4072656 is 6562704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131361 + ... + 131391.

Almost surely, 2^4072656 is an apocalyptic number.

4072656 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4072656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6856704).

4072656 is an abundant number, since it is smaller than the sum of its proper divisors (9640752).

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

4072656 is a wasteful number, since it uses less digits than its factorization.

4072656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 83 counting only the distinct ones).

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

The square root of 4072656 is about 2018.0822579865. The cubic root of 4072656 is about 159.6954623897.

The spelling of 4072656 in words is "four million, seventy-two thousand, six hundred fifty-six".