40720296 has 32 divisors (see below), whose sum is σ = 102002400. Its totient is φ = 13546560.

The previous prime is 40720291. The next prime is 40720297. The reversal of 40720296 is 69202704.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40720291) 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, 13486 + ... + 16226.

It is an arithmetic number, because the mean of its divisors is an integer number (3187575).

Almost surely, 2^40720296 is an apocalyptic number.

It is an amenable number.

40720296 is an abundant number, since it is smaller than the sum of its proper divisors (61282104).

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

40720296 is a wasteful number, since it uses less digits than its factorization.

40720296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3369 (or 3365 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 40720296 is about 6381.2456464236. The cubic root of 40720296 is about 344.0358039171.

The spelling of 40720296 in words is "forty million, seven hundred twenty thousand, two hundred ninety-six".