22161008 has 40 divisors (see below), whose sum is σ = 44111760. Its totient is φ = 10782720.

The previous prime is 22160993. The next prime is 22161023. The reversal of 22161008 is 80016122.

It is an interprime number because it is at equal distance from previous prime (22160993) and next prime (22161023).

It is a super-2 number, since 2×22161008² = 982220551152128, which contains 22 as substring.

It is a congruent number.

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, 169103 + ... + 169233.

It is an arithmetic number, because the mean of its divisors is an integer number (1102794).

Almost surely, 2^22161008 is an apocalyptic number.

It is an amenable number.

22161008 is a deficient number, since it is larger than the sum of its proper divisors (21950752).

22161008 is a wasteful number, since it uses less digits than its factorization.

22161008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345 (or 339 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 22161008 is about 4707.5479816992. The cubic root of 22161008 is about 280.8858339937.

The spelling of 22161008 in words is "twenty-two million, one hundred sixty-one thousand, eight".