40353720 has 128 divisors (see below), whose sum is σ = 139104000. Its totient is φ = 9262080.

The previous prime is 40353697. The next prime is 40353749. The reversal of 40353720 is 2735304.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24276 + ... + 25884.

It is an arithmetic number, because the mean of its divisors is an integer number (1086750).

Almost surely, 2^40353720 is an apocalyptic number.

40353720 is a gapful number since it is divisible by the number (40) 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 40353720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69552000).

40353720 is an abundant number, since it is smaller than the sum of its proper divisors (98750280).

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

40353720 is a wasteful number, since it uses less digits than its factorization.

40353720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653 (or 1649 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 24.

The square root of 40353720 is about 6352.4577920676. The cubic root of 40353720 is about 343.0003201611. Note that the first 3 decimals are identical.

The spelling of 40353720 in words is "forty million, three hundred fifty-three thousand, seven hundred twenty".