40448856 has 64 divisors (see below), whose sum is σ = 117492480. Its totient is φ = 11364480.

The previous prime is 40448833. The next prime is 40448857. The reversal of 40448856 is 65884404.

It is a super-2 number, since 2×40448856² = 3272219903417472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40448857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8275 + ... + 12221.

It is an arithmetic number, because the mean of its divisors is an integer number (1835820).

Almost surely, 2^40448856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40448856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58746240).

40448856 is an abundant number, since it is smaller than the sum of its proper divisors (77043624).

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

40448856 is a wasteful number, since it uses less digits than its factorization.

40448856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4024 (or 4020 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 39.

The square root of 40448856 is about 6359.9415091650. The cubic root of 40448856 is about 343.2696556636.

The spelling of 40448856 in words is "forty million, four hundred forty-eight thousand, eight hundred fifty-six".