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72968711 = 377919309
BaseRepresentation
bin1000101100101…
…10101000000111
312002022012020212
410112112220013
5122134444321
611123550035
71544136524
oct426265007
9162265225
1072968711
1138209522
122052b31b
131216ab6a
14999614b
15661555b
hex4596a07

72968711 has 4 divisors (see below), whose sum is σ = 72991800. Its totient is φ = 72945624.

The previous prime is 72968689. The next prime is 72968717. The reversal of 72968711 is 11786927.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-72968711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72968717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5876 + ... + 13433.

It is an arithmetic number, because the mean of its divisors is an integer number (18247950).

Almost surely, 272968711 is an apocalyptic number.

72968711 is a deficient number, since it is larger than the sum of its proper divisors (23089).

72968711 is a wasteful number, since it uses less digits than its factorization.

72968711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23088.

The product of its digits is 42336, while the sum is 41.

The square root of 72968711 is about 8542.1724988436. The cubic root of 72968711 is about 417.8741999890.

The spelling of 72968711 in words is "seventy-two million, nine hundred sixty-eight thousand, seven hundred eleven".

Divisors: 1 3779 19309 72968711