99278956 has 24 divisors (see below), whose sum is σ = 200954880. Its totient is φ = 42034512.

The previous prime is 99278951. The next prime is 99278969. The reversal of 99278956 is 65987299.

It is a super-2 number, since 2×99278956² = 19712622208899872, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 99278897 and 99278906.

It is not an unprimeable number, because it can be changed into a prime (99278951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19036 + ... + 23683.

It is an arithmetic number, because the mean of its divisors is an integer number (8373120).

Almost surely, 2^99278956 is an apocalyptic number.

It is an amenable number.

99278956 is an abundant number, since it is smaller than the sum of its proper divisors (101675924).

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

99278956 is a wasteful number, since it uses less digits than its factorization.

99278956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42813 (or 42811 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 55.

The square root of 99278956 is about 9963.8825765863. The cubic root of 99278956 is about 463.0405946615.

The spelling of 99278956 in words is "ninety-nine million, two hundred seventy-eight thousand, nine hundred fifty-six".