40747146 has 64 divisors (see below), whose sum is σ = 93744000. Its totient is φ = 11692800.

The previous prime is 40747141. The next prime is 40747159. The reversal of 40747146 is 64174704.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40747141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116580 + ... + 116928.

It is an arithmetic number, because the mean of its divisors is an integer number (1464750).

Almost surely, 2^40747146 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40747146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46872000).

40747146 is an abundant number, since it is smaller than the sum of its proper divisors (52996854).

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

40747146 is a wasteful number, since it uses less digits than its factorization.

40747146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455.

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 40747146 is about 6383.3491209552. The cubic root of 40747146 is about 344.1114036605. Note that the first 3 decimals are identical.

The spelling of 40747146 in words is "forty million, seven hundred forty-seven thousand, one hundred forty-six".