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389961430 = 2538996143
BaseRepresentation
bin10111001111100…
…101011011010110
31000011210002111221
4113033211123112
51244312231210
6102410120554
712443421535
oct2717453326
91004702457
10389961430
11190139881
12aa72015a
1362a38311
1439b1031c
152437e1da
hex173e56d6

389961430 has 8 divisors (see below), whose sum is σ = 701930592. Its totient is φ = 155984568.

The previous prime is 389961427. The next prime is 389961433. The reversal of 389961430 is 34169983.

It is an interprime number because it is at equal distance from previous prime (389961427) and next prime (389961433).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389961433) 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, 19498062 + ... + 19498081.

It is an arithmetic number, because the mean of its divisors is an integer number (87741324).

Almost surely, 2389961430 is an apocalyptic number.

389961430 is a deficient number, since it is larger than the sum of its proper divisors (311969162).

389961430 is a wasteful number, since it uses less digits than its factorization.

389961430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38996150.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 389961430 is about 19747.4411000514. The cubic root of 389961430 is about 730.5902713167.

The spelling of 389961430 in words is "three hundred eighty-nine million, nine hundred sixty-one thousand, four hundred thirty".

Divisors: 1 2 5 10 38996143 77992286 194980715 389961430