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72474 = 2347257
BaseRepresentation
bin10001101100011010
310200102020
4101230122
54304344
61315310
7421203
oct215432
9120366
1072474
114a4a6
1235b36
1326cac
141c5aa
1516719
hex11b1a

72474 has 16 divisors (see below), whose sum is σ = 148608. Its totient is φ = 23552.

The previous prime is 72469. The next prime is 72481. The reversal of 72474 is 47427.

It is an Ulam number.

It is an unprimeable number.

72474 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154 + ... + 410.

It is an arithmetic number, because the mean of its divisors is an integer number (9288).

272474 is an apocalyptic number.

72474 is an abundant number, since it is smaller than the sum of its proper divisors (76134).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74304).

72474 is a wasteful number, since it uses less digits than its factorization.

72474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309.

The product of its digits is 1568, while the sum is 24.

The square root of 72474 is about 269.2099552394. The cubic root of 72474 is about 41.6927694219.

The spelling of 72474 in words is "seventy-two thousand, four hundred seventy-four", and thus it is an iban number.