40897220 has 96 divisors (see below), whose sum is σ = 110412288. Its totient is φ = 12367872.

The previous prime is 40897211. The next prime is 40897231. The reversal of 40897220 is 2279804.

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, 41372 + ... + 42348.

It is an arithmetic number, because the mean of its divisors is an integer number (1150128).

Almost surely, 2^40897220 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 40897220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55206144).

40897220 is an abundant number, since it is smaller than the sum of its proper divisors (69515068).

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

40897220 is a wasteful number, since it uses less digits than its factorization.

40897220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029 (or 1027 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 40897220 is about 6395.0934316865. The cubic root of 40897220 is about 344.5333465361.

The spelling of 40897220 in words is "forty million, eight hundred ninety-seven thousand, two hundred twenty".