40147712 has 72 divisors (see below), whose sum is σ = 89404560. Its totient is φ = 17838080.

The previous prime is 40147711. The next prime is 40147747. The reversal of 40147712 is 21774104.

It is a super-2 number, since 2×40147712² = 3223677557669888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40147711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149114 + ... + 149382.

It is an arithmetic number, because the mean of its divisors is an integer number (1241730).

Almost surely, 2^40147712 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 40147712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44702280).

40147712 is an abundant number, since it is smaller than the sum of its proper divisors (49256848).

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

40147712 is a wasteful number, since it uses less digits than its factorization.

40147712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 40147712 is about 6336.2222183254. Note that the first 4 decimals coincide. The cubic root of 40147712 is about 342.4156454842.

The spelling of 40147712 in words is "forty million, one hundred forty-seven thousand, seven hundred twelve".