40744420 has 24 divisors (see below), whose sum is σ = 88515000. Its totient is φ = 15735552.

The previous prime is 40744409. The next prime is 40744453. The reversal of 40744420 is 2444704.

It can be written as a sum of positive squares in 4 ways, for example, as 65536 + 40678884 = 256^2 + 6378^2 .

It is a super-2 number, since 2×40744420² = 3320215522272800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34545 + ... + 35704.

It is an arithmetic number, because the mean of its divisors is an integer number (3688125).

Almost surely, 2^40744420 is an apocalyptic number.

It is an amenable number.

40744420 is an abundant number, since it is smaller than the sum of its proper divisors (47770580).

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

40744420 is a wasteful number, since it uses less digits than its factorization.

40744420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70287 (or 70285 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 25.

The square root of 40744420 is about 6383.1355931078. The cubic root of 40744420 is about 344.1037297602.

The spelling of 40744420 in words is "forty million, seven hundred forty-four thousand, four hundred twenty".