40358240 has 48 divisors (see below), whose sum is σ = 102685968. Its totient is φ = 14900736.

The previous prime is 40358239. The next prime is 40358243. The reversal of 40358240 is 4285304.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40358243) 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, 7622 + ... + 11781.

It is an arithmetic number, because the mean of its divisors is an integer number (2139291).

Almost surely, 2^40358240 is an apocalyptic number.

40358240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40358240 is an abundant number, since it is smaller than the sum of its proper divisors (62327728).

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

40358240 is a wasteful number, since it uses less digits than its factorization.

40358240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19431 (or 19423 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 40358240 is about 6352.8135499163. The cubic root of 40358240 is about 343.0131261144.

The spelling of 40358240 in words is "forty million, three hundred fifty-eight thousand, two hundred forty".