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26970051380 = 2251348502569
BaseRepresentation
bin11001000111100010…
…100101001100110100
32120121120220120020212
4121013202211030310
5420213313121010
620220113444552
71643225440256
oct310742451464
976546816225
1026970051380
111048a988868
125288270758
13270a7260ac
14143bc87cd6
15a7cb1b505
hex6478a5334

26970051380 has 12 divisors (see below), whose sum is σ = 56637107940. Its totient is φ = 10788020544.

The previous prime is 26970051349. The next prime is 26970051389. The reversal of 26970051380 is 8315007962.

It can be written as a sum of positive squares in 2 ways, for example, as 17869272976 + 9100778404 = 133676^2 + 95398^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26970051389) 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, 674251265 + ... + 674251304.

It is an arithmetic number, because the mean of its divisors is an integer number (4719758995).

Almost surely, 226970051380 is an apocalyptic number.

26970051380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26970051380 is an abundant number, since it is smaller than the sum of its proper divisors (29667056560).

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

26970051380 is a wasteful number, since it uses less digits than its factorization.

26970051380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348502578 (or 1348502576 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 26970051380 in words is "twenty-six billion, nine hundred seventy million, fifty-one thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 1348502569 2697005138 5394010276 6742512845 13485025690 26970051380