40222648 has 16 divisors (see below), whose sum is σ = 75485880. Its totient is φ = 20093088.

The previous prime is 40222643. The next prime is 40222661. The reversal of 40222648 is 84622204.

It is a super-2 number, since 2×40222648² = 3235722824263808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40222643) 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, 13590 + ... + 16282.

Almost surely, 2^40222648 is an apocalyptic number.

It is an amenable number.

40222648 is a deficient number, since it is larger than the sum of its proper divisors (35263232).

40222648 is a wasteful number, since it uses less digits than its factorization.

40222648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4566 (or 4562 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 40222648 is about 6342.1327642994. The cubic root of 40222648 is about 342.6285535153.

It can be divided in two parts, 4022 and 2648, that added together give a triangular number (6670 = T₁₁₅).

The spelling of 40222648 in words is "forty million, two hundred twenty-two thousand, six hundred forty-eight".