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387045077 = 1792162263
BaseRepresentation
bin10111000100011…
…101011011010101
3222222021221000212
4113010131123111
51243040420302
6102223415205
712406554206
oct2704353325
9888257025
10387045077
11189527771
12a9754505
1362256a73
14395915ad
1523ea5052
hex1711d6d5

387045077 has 4 divisors (see below), whose sum is σ = 389207520. Its totient is φ = 384882636.

The previous prime is 387045059. The next prime is 387045079. The reversal of 387045077 is 770540783.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 770540783 = 1261361091.

It is a cyclic number.

It is not a de Polignac number, because 387045077 - 212 = 387040981 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 (387045079) 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, 1080953 + ... + 1081310.

It is an arithmetic number, because the mean of its divisors is an integer number (97301880).

Almost surely, 2387045077 is an apocalyptic number.

It is an amenable number.

387045077 is a deficient number, since it is larger than the sum of its proper divisors (2162443).

387045077 is a wasteful number, since it uses less digits than its factorization.

387045077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2162442.

The product of its (nonzero) digits is 164640, while the sum is 41.

The square root of 387045077 is about 19673.4612358883. The cubic root of 387045077 is about 728.7644559328.

The spelling of 387045077 in words is "three hundred eighty-seven million, forty-five thousand, seventy-seven".

Divisors: 1 179 2162263 387045077