40729230 has 112 divisors (see below), whose sum is σ = 113637024. Its totient is φ = 10497600.

The previous prime is 40729223. The next prime is 40729237. The reversal of 40729230 is 3292704.

40729230 is a `hidden beast` number, since 407 + 29 + 230 = 666.

It is an interprime number because it is at equal distance from previous prime (40729223) and next prime (40729237).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is a junction number, because it is equal to n+sod(n) for n = 40729194 and 40729203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40729237) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 269655 + ... + 269805.

Almost surely, 2^40729230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40729230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56818512).

40729230 is an abundant number, since it is smaller than the sum of its proper divisors (72907794).

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

40729230 is a wasteful number, since it uses less digits than its factorization.

40729230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213 (or 198 counting only the distinct ones).

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

The square root of 40729230 is about 6381.9456280981. The cubic root of 40729230 is about 344.0609624696.

The spelling of 40729230 in words is "forty million, seven hundred twenty-nine thousand, two hundred thirty".