40234220 has 24 divisors (see below), whose sum is σ = 90991824. Its totient is φ = 14855616.

The previous prime is 40234219. The next prime is 40234241. The reversal of 40234220 is 2243204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77114 + ... + 77633.

It is an arithmetic number, because the mean of its divisors is an integer number (3791326).

Almost surely, 2^40234220 is an apocalyptic number.

It is an amenable number.

40234220 is an abundant number, since it is smaller than the sum of its proper divisors (50757604).

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

40234220 is a wasteful number, since it uses less digits than its factorization.

40234220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154769 (or 154767 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 40234220 is about 6343.0450100878. The cubic root of 40234220 is about 342.6614082845.

Adding to 40234220 its reverse (2243204), we get a palindrome (42477424).

The spelling of 40234220 in words is "forty million, two hundred thirty-four thousand, two hundred twenty".