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20311162732 = 2278315835521
BaseRepresentation
bin10010111010101000…
…111011111101101100
31221102112000222021101
4102322220323331230
5313044124201412
613155242412444
71316221014610
oct227250737554
957375028241
1020311162732
118683138203
123b2a201124
131bb8cb35b3
14da9763340
157dd232457
hex4baa3bf6c

20311162732 has 48 divisors (see below), whose sum is σ = 41145172992. Its totient is φ = 8592917760.

The previous prime is 20311162727. The next prime is 20311162771. The reversal of 20311162732 is 23726111302.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 20311162732.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3676132 + ... + 3681652.

It is an arithmetic number, because the mean of its divisors is an integer number (857191104).

Almost surely, 220311162732 is an apocalyptic number.

It is an amenable number.

20311162732 is an abundant number, since it is smaller than the sum of its proper divisors (20834010260).

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

20311162732 is a wasteful number, since it uses less digits than its factorization.

20311162732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7198 (or 7196 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The spelling of 20311162732 in words is "twenty billion, three hundred eleven million, one hundred sixty-two thousand, seven hundred thirty-two".

Divisors: 1 2 4 7 14 28 83 166 332 581 1162 1583 2324 3166 5521 6332 11042 11081 22084 22162 38647 44324 77294 131389 154588 262778 458243 525556 916486 919723 1832972 1839446 3207701 3678892 6415402 8739743 12830804 17479486 34958972 61178201 122356402 244712804 725398669 1450797338 2901594676 5077790683 10155581366 20311162732