Search a number
-
+
99752028 = 2238312669
BaseRepresentation
bin1011111001000…
…01100001011100
320221200221001120
411330201201130
5201014031103
613522010540
72320610145
oct574414134
9227627046
1099752028
11513421a2
12294a6a50
131788798c
14d368acc
158b56253
hex5f2185c

99752028 has 12 divisors (see below), whose sum is σ = 232754760. Its totient is φ = 33250672.

The previous prime is 99752027. The next prime is 99752041. The reversal of 99752028 is 82025799.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×997520282 = 19900934180225568, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99752021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4156323 + ... + 4156346.

It is an arithmetic number, because the mean of its divisors is an integer number (19396230).

Almost surely, 299752028 is an apocalyptic number.

It is an amenable number.

99752028 is an abundant number, since it is smaller than the sum of its proper divisors (133002732).

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

99752028 is a wasteful number, since it uses less digits than its factorization.

99752028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8312676 (or 8312674 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 99752028 is about 9987.5937041912. The cubic root of 99752028 is about 463.7749044440.

The spelling of 99752028 in words is "ninety-nine million, seven hundred fifty-two thousand, twenty-eight".

Divisors: 1 2 3 4 6 12 8312669 16625338 24938007 33250676 49876014 99752028