40428055 has 16 divisors (see below), whose sum is σ = 49934304. Its totient is φ = 31409280.

The previous prime is 40427993. The next prime is 40428071. The reversal of 40428055 is 55082404.

It is not a de Polignac number, because 40428055 - 2¹⁵ = 40395287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24517 + ... + 26113.

It is an arithmetic number, because the mean of its divisors is an integer number (3120894).

Almost surely, 2^40428055 is an apocalyptic number.

40428055 is a deficient number, since it is larger than the sum of its proper divisors (9506249).

40428055 is a wasteful number, since it uses less digits than its factorization.

40428055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746.

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 40428055 is about 6358.3059850875. The cubic root of 40428055 is about 343.2108029366.

The spelling of 40428055 in words is "forty million, four hundred twenty-eight thousand, fifty-five".