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302145401 = 1571979769
BaseRepresentation
bin10010000000100…
…101111101111001
3210001112120120102
4102000211331321
51104322123101
645552005145
710326123245
oct2200457571
9701476512
10302145401
1114560a348
12852307b5
134a79c47c
142c1b1425
151b7d486b
hex12025f79

302145401 has 8 divisors (see below), whose sum is σ = 305644680. Its totient is φ = 298666368.

The previous prime is 302145379. The next prime is 302145419. The reversal of 302145401 is 104541203.

It can be written as a sum of positive squares in 4 ways, for example, as 76545001 + 225600400 = 8749^2 + 15020^2 .

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 302145401 - 210 = 302144377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (302145451) 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, 26045 + ... + 35813.

It is an arithmetic number, because the mean of its divisors is an integer number (38205585).

Almost surely, 2302145401 is an apocalyptic number.

It is an amenable number.

302145401 is a deficient number, since it is larger than the sum of its proper divisors (3499279).

302145401 is a wasteful number, since it uses less digits than its factorization.

302145401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10123.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 302145401 is about 17382.3301372399. The cubic root of 302145401 is about 671.0249412705.

Adding to 302145401 its reverse (104541203), we get a palindrome (406686604).

The spelling of 302145401 in words is "three hundred two million, one hundred forty-five thousand, four hundred one".

Divisors: 1 157 197 9769 30929 1533733 1924493 302145401