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72022253 = 671815939
BaseRepresentation
bin1000100101011…
…11100011101101
312000112002221212
410102233203231
5121414203003
611051404205
71533115262
oct422574355
9160462855
1072022253
1137722426
1220153665
1311bc9124
1497cb269
1564c9dd8
hex44af8ed

72022253 has 8 divisors (see below), whose sum is σ = 73513440. Its totient is φ = 70543440.

The previous prime is 72022231. The next prime is 72022259. The reversal of 72022253 is 35222027.

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

It is a cyclic number.

It is not a de Polignac number, because 72022253 - 28 = 72021997 is a prime.

It is a super-4 number, since 4×720222534 (a number of 33 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72022259) 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, 9158 + ... + 15096.

It is an arithmetic number, because the mean of its divisors is an integer number (9189180).

Almost surely, 272022253 is an apocalyptic number.

It is an amenable number.

72022253 is a deficient number, since it is larger than the sum of its proper divisors (1491187).

72022253 is a wasteful number, since it uses less digits than its factorization.

72022253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6187.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 72022253 is about 8486.5925435360. The cubic root of 72022253 is about 416.0596195524.

The spelling of 72022253 in words is "seventy-two million, twenty-two thousand, two hundred fifty-three".

Divisors: 1 67 181 5939 12127 397913 1074959 72022253