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72054484 = 2218013621
BaseRepresentation
bin1000100101101…
…11011011010100
312000120202011121
410102313123110
5121421220414
611052213324
71533311245
oct422673324
9160522147
1072054484
1137744667
122016a244
1311c0a9b8
1497d8ccc
1564d4724
hex44b76d4

72054484 has 6 divisors (see below), whose sum is σ = 126095354. Its totient is φ = 36027240.

The previous prime is 72054457. The next prime is 72054497. The reversal of 72054484 is 48445027.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 60684100 + 11370384 = 7790^2 + 3372^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9006807 + ... + 9006814.

Almost surely, 272054484 is an apocalyptic number.

It is an amenable number.

72054484 is a deficient number, since it is larger than the sum of its proper divisors (54040870).

72054484 is a wasteful number, since it uses less digits than its factorization.

72054484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18013625 (or 18013623 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 34.

The square root of 72054484 is about 8488.4912675928. The cubic root of 72054484 is about 416.1216745291.

The spelling of 72054484 in words is "seventy-two million, fifty-four thousand, four hundred eighty-four".

Divisors: 1 2 4 18013621 36027242 72054484