40072228 has 24 divisors (see below), whose sum is σ = 80455424. Its totient is φ = 17107200.

The previous prime is 40072223. The next prime is 40072237. The reversal of 40072228 is 82227004.

It is not an unprimeable number, because it can be changed into a prime (40072223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4948 + ... + 10228.

Almost surely, 2^40072228 is an apocalyptic number.

It is an amenable number.

40072228 is an abundant number, since it is smaller than the sum of its proper divisors (40383196).

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

40072228 is a wasteful number, since it uses less digits than its factorization.

40072228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5563 (or 5561 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 40072228 is about 6330.2628697393. The cubic root of 40072228 is about 342.2009124647.

The spelling of 40072228 in words is "forty million, seventy-two thousand, two hundred twenty-eight".