40729320 has 96 divisors (see below), whose sum is σ = 138153600. Its totient is φ = 10386816.

The previous prime is 40729313. The next prime is 40729327. The reversal of 40729320 is 2392704.

It is an interprime number because it is at equal distance from previous prime (40729313) and next prime (40729327).

It is not an unprimeable number, because it can be changed into a prime (40729327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5821 + ... + 10739.

It is an arithmetic number, because the mean of its divisors is an integer number (1439100).

Almost surely, 2^40729320 is an apocalyptic number.

40729320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40729320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69076800).

40729320 is an abundant number, since it is smaller than the sum of its proper divisors (97424280).

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

40729320 is a wasteful number, since it uses less digits than its factorization.

40729320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4959 (or 4952 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 40729320 is about 6381.9526792354. The cubic root of 40729320 is about 344.0612158950.

The spelling of 40729320 in words is "forty million, seven hundred twenty-nine thousand, three hundred twenty".