40055136 has 96 divisors (see below), whose sum is σ = 116339328. Its totient is φ = 11965440.

The previous prime is 40055107. The next prime is 40055137. The reversal of 40055136 is 63155004.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40055137) 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, 87420 + ... + 87876.

It is an arithmetic number, because the mean of its divisors is an integer number (1211868).

Almost surely, 2^40055136 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 40055136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58169664).

40055136 is an abundant number, since it is smaller than the sum of its proper divisors (76284192).

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

40055136 is a wasteful number, since it uses less digits than its factorization.

40055136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564 (or 556 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 40055136 is about 6328.9127028266. The cubic root of 40055136 is about 342.1522525818.

The spelling of 40055136 in words is "forty million, fifty-five thousand, one hundred thirty-six".