40533534 has 40 divisors (see below), whose sum is σ = 91481808. Its totient is φ = 13413600.

The previous prime is 40533533. The next prime is 40533539. The reversal of 40533534 is 43533504.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40533498 and 40533507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40533533) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 23634 + ... + 25290.

Almost surely, 2^40533534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40533534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45740904).

40533534 is an abundant number, since it is smaller than the sum of its proper divisors (50948274).

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

40533534 is a wasteful number, since it uses less digits than its factorization.

40533534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1822 (or 1813 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 27.

The square root of 40533534 is about 6366.5951653926. The cubic root of 40533534 is about 343.5090289574.

The spelling of 40533534 in words is "forty million, five hundred thirty-three thousand, five hundred thirty-four".