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30090032 = 247268661
BaseRepresentation
bin111001011001…
…0001100110000
32002121201202122
41302302030300
530200340112
62552533412
7513522020
oct162621460
962551678
1030090032
1115a920a5
12a0b1268
136306c6b
143dd3a80
152995872
hex1cb2330

30090032 has 20 divisors (see below), whose sum is σ = 66628176. Its totient is φ = 12895680.

The previous prime is 30090031. The next prime is 30090037. The reversal of 30090032 is 23009003.

It is a happy number.

It is a super-2 number, since 2×300900322 = 1810820051522048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30090031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134219 + ... + 134442.

Almost surely, 230090032 is an apocalyptic number.

It is an amenable number.

30090032 is an abundant number, since it is smaller than the sum of its proper divisors (36538144).

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

30090032 is a wasteful number, since it uses less digits than its factorization.

30090032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268676 (or 268670 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 30090032 is about 5485.4381775752. The cubic root of 30090032 is about 311.0337738985.

Adding to 30090032 its reverse (23009003), we get a palindrome (53099035).

The spelling of 30090032 in words is "thirty million, ninety thousand, thirty-two".

Divisors: 1 2 4 7 8 14 16 28 56 112 268661 537322 1074644 1880627 2149288 3761254 4298576 7522508 15045016 30090032