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72469395 = 3251610431
BaseRepresentation
bin1000101000111…
…00101110010011
312001100211022200
410110130232103
5122023010040
611105134243
71536660015
oct424345623
9161324280
1072469395
11379a8369
122032a383
13120247cb
1498a61b5
156567630
hex451cb93

72469395 has 12 divisors (see below), whose sum is σ = 125613696. Its totient is φ = 38650320.

The previous prime is 72469393. The next prime is 72469399. The reversal of 72469395 is 59396427.

It is a happy number.

It is not a de Polignac number, because 72469395 - 21 = 72469393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1610431 = 72469395 / (7 + 2 + 4 + 6 + 9 + 3 + 9 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 72469395.

It is not an unprimeable number, because it can be changed into a prime (72469393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 805171 + ... + 805260.

It is an arithmetic number, because the mean of its divisors is an integer number (10467808).

Almost surely, 272469395 is an apocalyptic number.

72469395 is a deficient number, since it is larger than the sum of its proper divisors (53144301).

72469395 is a wasteful number, since it uses less digits than its factorization.

72469395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610442 (or 1610439 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 72469395 is about 8512.8958057761. The cubic root of 72469395 is about 416.9188634992.

It can be divided in two parts, 7246 and 9395, that added together give a square (16641 = 1292).

The spelling of 72469395 in words is "seventy-two million, four hundred sixty-nine thousand, three hundred ninety-five".

Divisors: 1 3 5 9 15 45 1610431 4831293 8052155 14493879 24156465 72469395