99967928 has 8 divisors (see below), whose sum is σ = 187439880. Its totient is φ = 49983960.

The previous prime is 99967927. The next prime is 99967937. The reversal of 99967928 is 82976999.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×99967928² = 19987173257226368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99967927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6247988 + ... + 6248003.

It is an arithmetic number, because the mean of its divisors is an integer number (23429985).

Almost surely, 2^99967928 is an apocalyptic number.

It is an amenable number.

99967928 is a deficient number, since it is larger than the sum of its proper divisors (87471952).

99967928 is a wasteful number, since it uses less digits than its factorization.

99967928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12495997 (or 12495993 counting only the distinct ones).

The product of its digits is 4408992, while the sum is 59.

The square root of 99967928 is about 9998.3962714027. The cubic root of 99967928 is about 464.1092563764.

The spelling of 99967928 in words is "ninety-nine million, nine hundred sixty-seven thousand, nine hundred twenty-eight".