40445724 has 24 divisors (see below), whose sum is σ = 102953088. Its totient is φ = 12256240.

The previous prime is 40445711. The next prime is 40445747. The reversal of 40445724 is 42754404.

It is a junction number, because it is equal to n+sod(n) for n = 40445691 and 40445700.

It is a congruent number.

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, 153072 + ... + 153335.

It is an arithmetic number, because the mean of its divisors is an integer number (4289712).

Almost surely, 2^40445724 is an apocalyptic number.

40445724 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40445724 is an abundant number, since it is smaller than the sum of its proper divisors (62507364).

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

40445724 is a wasteful number, since it uses less digits than its factorization.

40445724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306425 (or 306423 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 30.

The square root of 40445724 is about 6359.6952757188. The cubic root of 40445724 is about 343.2607955176.

The spelling of 40445724 in words is "forty million, four hundred forty-five thousand, seven hundred twenty-four".