40520214 has 48 divisors (see below), whose sum is σ = 106243488. Its totient is φ = 10895616.

The previous prime is 40520213. The next prime is 40520219. The reversal of 40520214 is 41202504.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40520213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7317 + ... + 11600.

It is an arithmetic number, because the mean of its divisors is an integer number (2213406).

Almost surely, 2^40520214 is an apocalyptic number.

40520214 is an abundant number, since it is smaller than the sum of its proper divisors (65723274).

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

40520214 is a wasteful number, since it uses less digits than its factorization.

40520214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18949 (or 18946 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 40520214 is about 6365.5489943916. The cubic root of 40520214 is about 343.4713972230.

Adding to 40520214 its reverse (41202504), we get a palindrome (81722718).

The spelling of 40520214 in words is "forty million, five hundred twenty thousand, two hundred fourteen".