40464220 has 12 divisors (see below), whose sum is σ = 84974904. Its totient is φ = 16185680.

The previous prime is 40464217. The next prime is 40464223. The reversal of 40464220 is 2246404.

It is an interprime number because it is at equal distance from previous prime (40464217) and next prime (40464223).

It is a junction number, because it is equal to n+sod(n) for n = 40464191 and 40464200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40464223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1011586 + ... + 1011625.

It is an arithmetic number, because the mean of its divisors is an integer number (7081242).

Almost surely, 2^40464220 is an apocalyptic number.

It is an amenable number.

40464220 is an abundant number, since it is smaller than the sum of its proper divisors (44510684).

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

40464220 is a wasteful number, since it uses less digits than its factorization.

40464220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2023220 (or 2023218 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 40464220 is about 6361.1492672315. The cubic root of 40464220 is about 343.3131124128.

The spelling of 40464220 in words is "forty million, four hundred sixty-four thousand, two hundred twenty".