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72745305 = 354849687
BaseRepresentation
bin1000101011000…
…00000101011001
312001212211210120
410111200011121
5122110322210
611115103453
71542216303
oct425400531
9161784716
1072745305
1138076696
1220441b89
13120c0279
149938973
1565be270
hex4560159

72745305 has 8 divisors (see below), whose sum is σ = 116392512. Its totient is φ = 38797488.

The previous prime is 72745291. The next prime is 72745327. The reversal of 72745305 is 50354727.

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

It is not a de Polignac number, because 72745305 - 26 = 72745241 is a prime.

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, 2424829 + ... + 2424858.

It is an arithmetic number, because the mean of its divisors is an integer number (14549064).

Almost surely, 272745305 is an apocalyptic number.

It is an amenable number.

72745305 is a deficient number, since it is larger than the sum of its proper divisors (43647207).

72745305 is a wasteful number, since it uses less digits than its factorization.

72745305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4849695.

The product of its (nonzero) digits is 29400, while the sum is 33.

The square root of 72745305 is about 8529.0858244011. The cubic root of 72745305 is about 417.4472999325.

The spelling of 72745305 in words is "seventy-two million, seven hundred forty-five thousand, three hundred five".

Divisors: 1 3 5 15 4849687 14549061 24248435 72745305