40185552 has 160 divisors (see below), whose sum is σ = 124170624. Its totient is φ = 11151360.

The previous prime is 40185527. The next prime is 40185557. The reversal of 40185552 is 25558104.

It is a super-2 number, since 2×40185552² = 3229757179089408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40185557) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1086078 + ... + 1086114.

Almost surely, 2^40185552 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 40185552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62085312).

40185552 is an abundant number, since it is smaller than the sum of its proper divisors (83985072).

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

40185552 is a wasteful number, since it uses less digits than its factorization.

40185552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 30.

The square root of 40185552 is about 6339.2075214493. The cubic root of 40185552 is about 342.5231895074.

The spelling of 40185552 in words is "forty million, one hundred eighty-five thousand, five hundred fifty-two".