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72742 = 237983
BaseRepresentation
bin10001110000100110
310200210011
4101300212
54311432
61320434
7422035
oct216046
9120704
1072742
114a71a
123611a
1327157
141c71c
1516847
hex11c26

72742 has 8 divisors (see below), whose sum is σ = 112176. Its totient is φ = 35352.

The previous prime is 72739. The next prime is 72763. The reversal of 72742 is 24727.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 418 + ... + 565.

It is an arithmetic number, because the mean of its divisors is an integer number (14022).

272742 is an apocalyptic number.

72742 is a deficient number, since it is larger than the sum of its proper divisors (39434).

72742 is a wasteful number, since it uses less digits than its factorization.

72742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022.

The product of its digits is 784, while the sum is 22.

The square root of 72742 is about 269.7072486975. The cubic root of 72742 is about 41.7440977947.

The spelling of 72742 in words is "seventy-two thousand, seven hundred forty-two", and thus it is an iban number.

Divisors: 1 2 37 74 983 1966 36371 72742