40729722 has 64 divisors (see below), whose sum is σ = 97210368. Its totient is φ = 11232000.

The previous prime is 40729721. The next prime is 40729727. The reversal of 40729722 is 22792704.

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

It is not an unprimeable number, because it can be changed into a prime (40729721) 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, 34197 + ... + 35367.

It is an arithmetic number, because the mean of its divisors is an integer number (1518912).

Almost surely, 2^40729722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40729722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48605184).

40729722 is an abundant number, since it is smaller than the sum of its proper divisors (56480646).

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

40729722 is a wasteful number, since it uses less digits than its factorization.

40729722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 40729722 is about 6381.9841742204. The cubic root of 40729722 is about 344.0623478573.

The spelling of 40729722 in words is "forty million, seven hundred twenty-nine thousand, seven hundred twenty-two".