40396560 has 80 divisors (see below), whose sum is σ = 125884800. Its totient is φ = 10716160.

The previous prime is 40396553. The next prime is 40396567. The reversal of 40396560 is 6569304.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40396553) and next prime (40396567).

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (40396567) 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, 67141 + ... + 67739.

It is an arithmetic number, because the mean of its divisors is an integer number (1573560).

Almost surely, 2^40396560 is an apocalyptic number.

40396560 is a gapful number since it is divisible by the number (40) 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 40396560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62942400).

40396560 is an abundant number, since it is smaller than the sum of its proper divisors (85488240).

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

40396560 is a wasteful number, since it uses less digits than its factorization.

40396560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896 (or 890 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 40396560 is about 6355.8288208541. The cubic root of 40396560 is about 343.1216550050.

The spelling of 40396560 in words is "forty million, three hundred ninety-six thousand, five hundred sixty".