40537328 has 20 divisors (see below), whose sum is σ = 84583128. Its totient is φ = 18709440.

The previous prime is 40537327. The next prime is 40537363. The reversal of 40537328 is 82373504.

It is a happy number.

It is a super-2 number, since 2×40537328² = 3286549922759168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40537294 and 40537303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40537327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97238 + ... + 97653.

Almost surely, 2^40537328 is an apocalyptic number.

It is an amenable number.

40537328 is an abundant number, since it is smaller than the sum of its proper divisors (44045800).

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

40537328 is a wasteful number, since it uses less digits than its factorization.

40537328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194912 (or 194906 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 40537328 is about 6366.8931198819. The cubic root of 40537328 is about 343.5197462776.

The spelling of 40537328 in words is "forty million, five hundred thirty-seven thousand, three hundred twenty-eight".