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30380076 = 2233281297
BaseRepresentation
bin111001111100…
…1000000101100
32010011110122000
41303321000230
530234130301
63003052300
7516140436
oct163710054
963143560
1030380076
1116170001
12a211090
1363a8c9c
14406b656
152a01786
hex1cf902c

30380076 has 24 divisors (see below), whose sum is σ = 78763440. Its totient is φ = 10126656.

The previous prime is 30380047. The next prime is 30380083. The reversal of 30380076 is 67008303.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140541 + ... + 140756.

It is an arithmetic number, because the mean of its divisors is an integer number (3281810).

Almost surely, 230380076 is an apocalyptic number.

30380076 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

30380076 is an abundant number, since it is smaller than the sum of its proper divisors (48383364).

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

30380076 is a wasteful number, since it uses less digits than its factorization.

30380076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281310 (or 281302 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 30380076 is about 5511.8124060966. The cubic root of 30380076 is about 312.0299527457.

Adding to 30380076 its reverse (67008303), we get a palindrome (97388379).

The spelling of 30380076 in words is "thirty million, three hundred eighty thousand, seventy-six".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 108 281297 562594 843891 1125188 1687782 2531673 3375564 5063346 7595019 10126692 15190038 30380076