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72744801 = 327189477
BaseRepresentation
bin1000101010111…
…11111101100001
312001212211002220
410111133331201
5122110313201
611115101253
71542214653
oct425377541
9161784086
1072744801
1138076278
1220441829
13120bcc7c
1499386d3
1565be036
hex455ff61

72744801 has 8 divisors (see below), whose sum is σ = 97352064. Its totient is φ = 48317040.

The previous prime is 72744799. The next prime is 72744809. The reversal of 72744801 is 10844727.

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

It is not a de Polignac number, because 72744801 - 21 = 72744799 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72744809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43926 + ... + 45551.

It is an arithmetic number, because the mean of its divisors is an integer number (12169008).

Almost surely, 272744801 is an apocalyptic number.

It is an amenable number.

72744801 is a deficient number, since it is larger than the sum of its proper divisors (24607263).

72744801 is a wasteful number, since it uses less digits than its factorization.

72744801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89751.

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 72744801 is about 8529.0562783933. The cubic root of 72744801 is about 417.4463358661.

The spelling of 72744801 in words is "seventy-two million, seven hundred forty-four thousand, eight hundred one".

Divisors: 1 3 271 813 89477 268431 24248267 72744801