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73025620 = 2253651281
BaseRepresentation
bin1000101101001…
…00100001010100
312002102002022121
410112210201110
5122143304440
611125105324
71544464453
oct426444124
9162362277
1073025620
1138248258
1220558244
131218aa35
1499acb9a
15662734a
hex45a4854

73025620 has 12 divisors (see below), whose sum is σ = 153353844. Its totient is φ = 29210240.

The previous prime is 73025611. The next prime is 73025629. The reversal of 73025620 is 2652037.

It is an interprime number because it is at equal distance from previous prime (73025611) and next prime (73025629).

It can be written as a sum of positive squares in 2 ways, for example, as 43930384 + 29095236 = 6628^2 + 5394^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73025629) 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, 1825621 + ... + 1825660.

It is an arithmetic number, because the mean of its divisors is an integer number (12779487).

Almost surely, 273025620 is an apocalyptic number.

It is an amenable number.

73025620 is an abundant number, since it is smaller than the sum of its proper divisors (80328224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73025620 is a wasteful number, since it uses less digits than its factorization.

73025620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3651290 (or 3651288 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 73025620 is about 8545.5029108883. The cubic root of 73025620 is about 417.9828064630.

Adding to 73025620 its reverse (2652037), we get a palindrome (75677657).

The spelling of 73025620 in words is "seventy-three million, twenty-five thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 3651281 7302562 14605124 18256405 36512810 73025620