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72030884 = 2247383143
BaseRepresentation
bin1000100101100…
…01101010100100
312000112112210112
410102301222210
5121414442014
611051512152
71533152402
oct422615244
9160475715
1072030884
1137728962
1220158658
1311c00033
1497d0472
1564cc73e
hex44b1aa4

72030884 has 12 divisors (see below), whose sum is σ = 128736384. Its totient is φ = 35249064.

The previous prime is 72030859. The next prime is 72030899. The reversal of 72030884 is 48803027.

It is a self number, because there is not a number n which added to its sum of digits gives 72030884.

It is an unprimeable number.

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, 191384 + ... + 191759.

It is an arithmetic number, because the mean of its divisors is an integer number (10728032).

Almost surely, 272030884 is an apocalyptic number.

It is an amenable number.

72030884 is a deficient number, since it is larger than the sum of its proper divisors (56705500).

72030884 is a wasteful number, since it uses less digits than its factorization.

72030884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383194 (or 383192 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 72030884 is about 8487.1010362785. The cubic root of 72030884 is about 416.0762388008.

The spelling of 72030884 in words is "seventy-two million, thirty thousand, eight hundred eighty-four".

Divisors: 1 2 4 47 94 188 383143 766286 1532572 18007721 36015442 72030884