99120672 has 168 divisors, whose sum is σ = 334930176. Its totient is φ = 28273536.

The previous prime is 99120643. The next prime is 99120683. The reversal of 99120672 is 27602199.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 162993 + ... + 163599.

It is an arithmetic number, because the mean of its divisors is an integer number (1993632).

Almost surely, 2^99120672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99120672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167465088).

99120672 is an abundant number, since it is smaller than the sum of its proper divisors (235809504).

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

99120672 is an equidigital number, since it uses as much as digits as its factorization.

99120672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642 (or 619 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 99120672 is about 9955.9365204887. The cubic root of 99120672 is about 462.7943830250.

The spelling of 99120672 in words is "ninety-nine million, one hundred twenty thousand, six hundred seventy-two".