40707072 has 132 divisors (see below), whose sum is σ = 134545216. Its totient is φ = 11612160.

The previous prime is 40707059. The next prime is 40707077. The reversal of 40707072 is 27070704.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40707077) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64197 + ... + 64827.

Almost surely, 2^40707072 is an apocalyptic number.

40707072 is a gapful number since it is divisible by the number (42) 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 40707072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67272608).

40707072 is an abundant number, since it is smaller than the sum of its proper divisors (93838144).

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

40707072 is a wasteful number, since it uses less digits than its factorization.

40707072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664 (or 643 counting only the distinct ones).

The product of its (nonzero) digits is 2744, while the sum is 27.

The square root of 40707072 is about 6380.2094009523. The cubic root of 40707072 is about 343.9985577729.

Adding to 40707072 its reverse (27070704), we get a palindrome (67777776).

The spelling of 40707072 in words is "forty million, seven hundred seven thousand, seventy-two".