40455870 has 192 divisors, whose sum is σ = 127552320. Its totient is φ = 8128512.

The previous prime is 40455847. The next prime is 40455881. The reversal of 40455870 is 7855404.

It is a zygodrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 554154 + ... + 554226.

It is an arithmetic number, because the mean of its divisors is an integer number (664335).

Almost surely, 2^40455870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40455870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63776160).

40455870 is an abundant number, since it is smaller than the sum of its proper divisors (87096450).

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

40455870 is a wasteful number, since it uses less digits than its factorization.

40455870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 40455870 is about 6360.4929054280. The cubic root of 40455870 is about 343.2894959792.

The spelling of 40455870 in words is "forty million, four hundred fifty-five thousand, eight hundred seventy".