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72940667 = 531399901
BaseRepresentation
bin1000101100011…
…11110001111011
312002020202210012
410112033301323
5122133100132
611123212135
71543662002
oct426176173
9162222705
1072940667
113819a448
122051704b
131215b177
149989c39
15660c0b2
hex458fc7b

72940667 has 8 divisors (see below), whose sum is σ = 74859120. Its totient is φ = 71042400.

The previous prime is 72940661. The next prime is 72940687. The reversal of 72940667 is 76604927.

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 72940667 - 26 = 72940603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72940661) 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, 2417 + ... + 12317.

It is an arithmetic number, because the mean of its divisors is an integer number (9357390).

Almost surely, 272940667 is an apocalyptic number.

72940667 is a deficient number, since it is larger than the sum of its proper divisors (1918453).

72940667 is a wasteful number, since it uses less digits than its factorization.

72940667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10093.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 72940667 is about 8540.5308383027. The cubic root of 72940667 is about 417.8206593891.

The spelling of 72940667 in words is "seventy-two million, nine hundred forty thousand, six hundred sixty-seven".

Divisors: 1 53 139 7367 9901 524753 1376239 72940667