40320258 has 16 divisors (see below), whose sum is σ = 87971616. Its totient is φ = 12218240.

The previous prime is 40320253. The next prime is 40320263. The reversal of 40320258 is 85202304.

It is an interprime number because it is at equal distance from previous prime (40320253) and next prime (40320263).

It is not an unprimeable number, because it can be changed into a prime (40320253) 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, 305391 + ... + 305522.

It is an arithmetic number, because the mean of its divisors is an integer number (5498226).

Almost surely, 2^40320258 is an apocalyptic number.

40320258 is an abundant number, since it is smaller than the sum of its proper divisors (47651358).

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

40320258 is a wasteful number, since it uses less digits than its factorization.

40320258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610929.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 40320258 is about 6349.8234621129. The cubic root of 40320258 is about 342.9054866850.

The spelling of 40320258 in words is "forty million, three hundred twenty thousand, two hundred fifty-eight".