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20331969430 = 2515712950299
BaseRepresentation
bin10010111011111000…
…010011101110010110
31221110222012001200211
4102323320103232112
5313114441010210
613201304400034
71316562613543
oct227370235626
957428161624
1020331969430
118693959623
123b3517601a
131bc03b9c56
14dac41bbca
157dee9238a
hex4bbe13b96

20331969430 has 16 divisors (see below), whose sum is σ = 36830653200. Its totient is φ = 8080985952.

The previous prime is 20331969389. The next prime is 20331969431. The reversal of 20331969430 is 3496913302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331969431) 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, 6473580 + ... + 6476719.

It is an arithmetic number, because the mean of its divisors is an integer number (2301915825).

Almost surely, 220331969430 is an apocalyptic number.

20331969430 is a deficient number, since it is larger than the sum of its proper divisors (16498683770).

20331969430 is a wasteful number, since it uses less digits than its factorization.

20331969430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12950463.

The product of its (nonzero) digits is 104976, while the sum is 40.

The spelling of 20331969430 in words is "twenty billion, three hundred thirty-one million, nine hundred sixty-nine thousand, four hundred thirty".

Divisors: 1 2 5 10 157 314 785 1570 12950299 25900598 64751495 129502990 2033196943 4066393886 10165984715 20331969430