99780226 has 16 divisors (see below), whose sum is σ = 184209984. Its totient is φ = 39473424.

The previous prime is 99780209. The next prime is 99780257. The reversal of 99780226 is 62208799.

It is a happy number.

It is a super-2 number, since 2×99780226² = 19912187001222152, which contains 22 as substring.

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, 273940 + ... + 274303.

It is an arithmetic number, because the mean of its divisors is an integer number (11513124).

Almost surely, 2^99780226 is an apocalyptic number.

99780226 is a deficient number, since it is larger than the sum of its proper divisors (84429758).

99780226 is a wasteful number, since it uses less digits than its factorization.

99780226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548265.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 99780226 is about 9989.0052557800. The cubic root of 99780226 is about 463.8186004402.

The spelling of 99780226 in words is "ninety-nine million, seven hundred eighty thousand, two hundred twenty-six".