40298478 has 16 divisors (see below), whose sum is σ = 87924096. Its totient is φ = 12211640.

The previous prime is 40298477. The next prime is 40298537. The reversal of 40298478 is 87489204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40298471) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 305226 + ... + 305357.

It is an arithmetic number, because the mean of its divisors is an integer number (5495256).

Almost surely, 2^40298478 is an apocalyptic number.

40298478 is an abundant number, since it is smaller than the sum of its proper divisors (47625618).

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

40298478 is a wasteful number, since it uses less digits than its factorization.

40298478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610599.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 40298478 is about 6348.1082221399. The cubic root of 40298478 is about 342.8437325608.

The spelling of 40298478 in words is "forty million, two hundred ninety-eight thousand, four hundred seventy-eight".